Adaptec Disk Array Administrator User’s Guide
Copyright © 2001 Adaptec, Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035. Trademarks Adaptec and the Adaptec logo are trademarks of Adaptec, Inc., which may be registered in some jurisdictions.
Contents 1 Getting Started About This Guide 1-1 Getting Online Help 1-2 Accessing Adaptec Disk Array Administrator 1-2 The Adaptec Disk Array Administrator Screen 1-4 Navigating Adaptec Disk Array Administrator 1-4 Changing the Screen Display 1-5 2 Creating and Managing Arrays and Partitions Creating Arrays 2-1 Creating a Single-Partition Array 2-2 Creating a Multiple-Partition Array 2-6 Managing Arrays 2-9 Adding a Partition 2-9 Viewing Array and Disk Drive Status Information Stopping the Array Initiali
Contents 3 Monitoring System Status Displaying the Event Log 3-1 Viewing the Most Recent Event 3-3 Viewing One Event at a Time 3-3 Viewing a Whole Screen of Events 3-3 Capturing the Event Log File 3-4 Displaying Hardware and Configuration Information Displaying Overall Statistics 3-7 Resetting Overall Statistics 3-9 4 3-4 Managing Spares Managing Dedicated Spares 4-2 Adding a Dedicated Spare 4-2 Deleting a Dedicated Spare 4-3 Enabling Dynamic Spares 4-3 Managing the Spare Pool 4-5 Adding a Spare to the
Contents Disabling SCSI Channel 3 5-14 Changing the Sample Rate 5-15 Understanding the Audible Alarm 5-16 Changing the Alarm Mute Setting 5-16 Locking the Cache 5-17 Configuring the Battery 5-18 Enabling and Disabling the Battery 5-18 Changing the Battery Age/Disabling the Battery Life Monitor 5-19 Changing the Utility Priority 5-20 Rescanning All Channels 5-21 Pausing I/O 5-22 Restoring Default Settings 5-23 6 Managing Disk Drives and Enclosures Managing Disk Drives 6-1 Displaying Disk Drive Information
Contents Warning and Error Events 7-8 Warnings 7-8 Errors 7-9 Using the Loader Diagnostics Menu 7-10 Using the Loader Utility Menu 7-11 Understanding SCSI Errors 7-11 Disk Errors 7-11 Disk Channel Errors 7-13 Voltage and Temperature Errors and Warnings 7-15 A Storage Concepts Devices A-1 Controllers A-2 Storage Systems A-2 Channels A-2 Disk Drives A-2 Arrays A-3 Free Space A-4 Partitions A-4 Redundancy A-6 Array Types A-6 Volume Set A-8 Stripe Set (RAID 0) A-8 Mirror Set (RAID 1) A-10 RAID 5 A-11 Stripe
1 Getting Started In This Chapter About This Guide 1-1 Accessing Adaptec Disk Array Administrator 1-2 The Adaptec Disk Array Administrator Screen 1-4 Navigating Adaptec Disk Array Administrator 1-4 Adaptec Disk Array AdministratorTM is a utility that manages the storage devices connected to your DuraStor RAID controllers. It is embedded in the firmware of the controller, and can be used with any Operating System (OS).
Getting Started Getting Online Help Online Help is available at any time from the Help menu. You can also press F1 or select Help in a dialog box to display Online Help specific to where you are on-screen. Accessing Adaptec Disk Array Administrator You can access Adaptec Disk Array Administrator using the RS-232 serial port on the DuraStor 6200S RAID appliance. Use the port associated with the controller you wish to access. Refer to the DuraStor Installation and User’s Guide for more information.
Getting Started Table 1-2 Terminal Emulator Software Communications Parameters Setting Value Baud Rate 115,200 Data Bits 8 Stop Bits 1 Parity None Flow Control Software (XON/XOFF) Connector COM1 (typically) To access Adaptec Disk Array Administrator 1 On the I/O connectivity panel of the DuraStor 6200SR, turn the switch to EXT. 2 On the DuraStor 6200SR Operator Control Panel, use the arrow buttons to a Choose Hardware Menu, then press Enter. b Choose Mode, then press Enter.
Getting Started The Adaptec Disk Array Administrator Screen Figure 1-1 shows the System Menu screen. All other menus are accessed from this screen and have a similar appearance. (Place-holder screenshot - awaiting updated file) Figure 1-1 The System Menu Screen Navigating Adaptec Disk Array Administrator Use your computer keyboard to navigate Adaptec Disk Array Administrator. Table 1-3 describes the primary navigation and selection methods.
Getting Started Note: After 4 minutes of inactivity, Adaptec Disk Array Administrator times out and returns to the System Menu screen. Changing the Screen Display After you have accessed Adaptec Disk Array Administrator, you can change the screen display using a combination of keystrokes, as shown on the System Menu. Table 1-4 lists the keystrokes required to change various screen displays.
2 Creating and Managing Arrays and Partitions In This Chapter Creating Arrays 2-1 Managing Arrays 2-9 Managing Partitions 2-22 Creating Arrays You can create an array at any time. Table 2-1 describes the disk drive requirements for each RAID level.
Creating and Managing Arrays and Partitions Note: Before you create more than one array, you must be sure that your host OS supports multiple Logical Unit Numbers (LUNs). Most OSs do, or can be enabled to. If yours does not, the host sees only one array at LUN 0. Refer to Setting the Host System HBA to Multiple-LUN in the DuraStor Installation and User’s Guide. Before you create an array, you must decide whether you want to partition the array.
Creating and Managing Arrays and Partitions If you want to create a multiple-partition array, see Creating a Multiple-Partition Array on page 2-6. 3 Select Yes to create a single-partition array and press Enter. The LUN prompt appears. 4 Type the LUN for the array and press Enter. The LUN that appears is the suggested default LUN assignment. If the letters OV appear before a LUN, it indicates that the selection overlaps with a soft LUN, probably the controller or SAF-TE Environmental Processor (SEP) LUN.
Creating and Managing Arrays and Partitions If you selected any array type other than RAID 50, the Number of Drives prompt appears. 6 Type the number of disk drives (excluding spares) you want in the array and press Enter. The Select Drive(s) menu appears. If you are using active-active mode, the Select Drive(s) menu includes all available disk drives (those that are not members of an array and are not assigned as dedicated or pool spares) on both controllers.
Creating and Managing Arrays and Partitions 9 Select a disk drive to use as a dedicated spare and press Enter. Only available disk drives (those that are not members of an array and are not assigned as dedicated or pool spares) display. You can delete a dedicated spare from the array at any time. For more information, see Deleting a Dedicated Spare on page 4-3. If the array you are creating is a RAID 3, RAID 4, RAID 5, or RAID 50, the Chunk Size menu appears.
Creating and Managing Arrays and Partitions Note: Most OSs, such as Windows NT 4.0, require you to reboot the host system to see the new array. NetWare v3.12 and later can recognize new devices if you type the command SCAN FOR NEW DEVICES at the console prompt. Other OSs might have similar features. Creating a Multiple-Partition Array You can create an array that has more than one partition.
Creating and Managing Arrays and Partitions Note: A RAID 10 array is automatically created when there are more than two disk drives in a mirrored array. See Appendix A, Storage Concepts, for more information. – If you selected RAID 50 as the array type, the Select RAID50 Array Size menu appears with all possible configurations for array and disk drive combinations. Select the configuration you want, press Enter, and skip to Step 7.
Creating and Managing Arrays and Partitions 7 Type the number of spares you want to add and press Enter. This creates dedicated spares that can only be used by this array. A dedicated spare disk drive will not be available for any other use. For more information about spares, see Chapter 4, Managing Spares. If you do not want a spare, type 0. The Select Drive(s) menu appears. 8 Select a disk drive to use as a dedicated spare and press Enter. Repeat if you are using more than one disk drive as a spare.
Creating and Managing Arrays and Partitions If you need to change the disk drives or some other array configuration, you can stop the array initialization process. See Stopping the Array Initialization Process on page 2-13 Note: Most OSs, such as Windows NT 4.0, require you to reboot the host system to see the new array. NetWare v3.12 and later can recognize new devices if you type the command SCAN FOR NEW DEVICES at the console prompt. Other OSs might have similar features.
Creating and Managing Arrays and Partitions To add a partition: 1 From the System Menu, select Array Menu and press Enter. The Select Array menu appears. 2 Select the multiple-partition array you want and press Enter. That array’s Array menu appears. 3 Select Add a Partition and press Enter. The Select Free Partition menu appears with a list of free partitions. A free partition is free space that has not yet been partitioned or space that had a partition that was deleted.
Creating and Managing Arrays and Partitions Viewing Array and Disk Drive Status Information You can view array status and disk drive status at any time. Viewing Array Status You can view the following information for any array: ■ State—Online, Offline, Critical, or Fault-tolerant. ■ Serial number—Unique number the controller assigns to each array. ■ Name—Name you gave to the array. ■ RAID level—Array type (0, 3, 4, 5, 50, volume, or mirrored).
Creating and Managing Arrays and Partitions To view the status of an array: 1 From the System Menu, select Array Menu and press Enter. The Select Array menu appears. 2 Select the array you want and press Enter. That array’s Array menu appears. 3 Select Array Status and press Enter. A window appears showing the status of the array you selected. 4 Press Esc to return to the Array menu.
Creating and Managing Arrays and Partitions 3 Select Drive Status and press Enter. The Display Drives menu appears showing the disk drives that are members of the array and that are assigned as dedicated spares. Use the ↑ or ↓ key to scroll through the disk drives. These are the drives that are currently members of the array. 4 Press Esc to return to the Array menu.
Creating and Managing Arrays and Partitions To verify an array: 1 From the System Menu, select Array Menu and press Enter. The Select Array menu appears. 2 Select the array you want and press Enter. That array’s Array menu appears. 3 Select Verify Function and press Enter. That array’s Verify menu appears. 4 Select Start Verify and press Enter. Verification begins and the Verify prompt appears displaying the percentage of verification completed. You can continue to use the array during verification.
Creating and Managing Arrays and Partitions 5 Press Esc to return to the Verify Function menu. Stopping the Verification You can stop the verification process. Normally, you should let the verification finish, although stopping it does not cause any damage to your data. You may wish to stop the verification if you want to improve performance of the controller for another application. To stop the verification process: 1 From the System Menu, select Array Menu and press Enter. The Select Array menu appears.
Creating and Managing Arrays and Partitions Expanding Array Capacity You can expand array capacity without stopping I/O activity. You can only expand one array at a time. Note: Expanding an array does not change the size of host OS partitions that reside on the array because the controller is working at the block level, not the file system level, of the OS.
Creating and Managing Arrays and Partitions To expand an array: 1 From the System Menu, select Array Menu and press Enter. The Select Array menu appears. 2 Select the array you want and press Enter. That array’s Array menu appears. 3 Select Expand Function and press Enter. That array’s Expand menu appears. 4 Select Start Expand and press Enter. The Number of Drives prompt appears. 5 Type the number of disk drives you want to add and press Enter. The Select Drive(s) menu appears.
Creating and Managing Arrays and Partitions 2 Select the array you want and press Enter. That array’s Array menu appears. 3 Select Expand Function and press Enter. That array’s Expand menu appears. 4 Select View Expand Status and press Enter. The Expand Status window appears. 5 Press Esc to return to the Expand Function menu. Changing an Array Name You can change the name of an array. This does not affect the target ID or LUN values of the array.
Creating and Managing Arrays and Partitions controller you change it to. You can no longer see the array on the original controller. Note: When you change the ownership of an array, the LUNs assigned to the array’s partitions become invalid. After changing ownership, you must assign a new LUN to each array partition. To change array ownership: 1 From the System Menu, select Array Menu and press Enter. The Select Array menu appears. 2 Select the array you want and press Enter.
Creating and Managing Arrays and Partitions ■ An array is offline because a disk drive is failing, you have no data backup, and you want to try to recover the data from the array. (Only a non-fault tolerant array will go offline when a single disk drive fails. Multiple disk drive failures will cause a fault-tolerant array to go offline.) In this case, the Trust Array Function may work, but only as long as the failing disk drive continues to operate.
Creating and Managing Arrays and Partitions 9 Select Yes and press Enter. The array will be back online Note: If the array does not come back online, too many members may be offline or the array may have additional failures on the bus or enclosure that Trust Array Function cannot fix. Deleting an Array You can delete an array when you no longer need the array or you need the disk drives for another use.
Creating and Managing Arrays and Partitions Managing Partitions Using Adaptec Disk Array Administrator you can manage partitions by ■ Viewing partition status information. See page 2-24. ■ Adding a partition. See page 2-9. ■ Expanding a partition. See page 2-27. ■ Changing a partition name. See page 2-27. ■ Changing a partition LUN. See page 2-28. ■ Deleting a partition. See page 2-29.
Creating and Managing Arrays and Partitions When you create a partition, you set the size of the partition. Figure 2-2 shows a single partition. Partition 1 Free space Figure 2-2 Array After Creating One Partition Disk Array Administrator assigns each partition a unique serial number and sequence number. It assigns sequence numbers in the order the partitions are created, so the first partition on an array is number 1, the second is 2, and so on.
Creating and Managing Arrays and Partitions After expanding an array, you can either add a partition or expand the last partition to use the new free space. You can also delete one or more partitions and expand a partition into the space. Viewing Partition Status Information You can perform three functions related to partition status. You can ■ View partition status. See page 2-24. ■ View partition statistics. See page 2-25. ■ Reset partition statistics. See page 2-26.
Creating and Managing Arrays and Partitions To view the status of a partition: 1 Display the Partition Menu. (See Table 2-3): Table 2-3 How To Display the Partition Menu From the Array Menu From the All Partitions Menu 1 From the System Menu, select Array Menu and press Enter. The Select Array menu appears. 2 Select the array you want and press Enter. That array’s Array menu appears. 3 Select Partition Menu and press Enter. The Select Partition menu appears.
Creating and Managing Arrays and Partitions Similar statistics are also available on an aggregate basis for all partition LUNs. See Displaying Overall Statistics on page 3-7. To view the partition statistics: 1 Display the Partition Menu. See Step 1 on page 2-25 for instructions. 2 Select Partition Statistics and press Enter. The Statistics menu appears. 3 Select View Statistics and press Enter. A window appears showing the statistics of the partition you selected.
Creating and Managing Arrays and Partitions To reset partition statistics: 1 Display the Partition Menu. See Step 1 on page 2-25 for instructions. 2 Select Partition Statistics and press Enter. The Statistics menu appears. 3 Select Reset Statistics and press Enter. The system confirms that you want to make the change. 4 Select Yes and press Enter. The system confirms that the statistics have been cleared and returns to the Statistics menu.
Creating and Managing Arrays and Partitions To change a partition name: 1 Display the Partition Menu. See Step 1 on page 2-25 for instructions. 2 Select Change Partition Name and press Enter. The Enter New Name prompt appears. 3 Type the name you want to use and press Enter. You can use up to 35 characters. You can include any characters in the name, including spaces. The system confirms that you want to make the change. 4 Select Yes and press Enter.
Creating and Managing Arrays and Partitions Deleting a Partition You can delete a partition when you no longer need it and you want to use the space for another purpose. ! Caution: Deleting a partition deletes all data contained in the partition. Note: You cannot delete a partition while any utility is running on the array. You must stop the utility, if possible, or let it finish, before you can delete the partition. To delete a partition: 1 Display the Partition Menu.
3 Monitoring System Status In This Chapter Displaying the Event Log 3-1 Displaying Hardware and Configuration Information 3-4 Displaying Overall Statistics 3-7 You can monitor your system regularly to ensure that the controller, disk drives, and arrays are working properly by: ■ Displaying the event log. See page 3-1. ■ Viewing hardware and configuration information. See page 3-4. ■ Displaying Overall Statistics. See page 3-7.
Monitoring System Status Below is a list of some of the key warning and failure events included in the event log during operation: ■ Disk detected error ■ Disk channel error ■ Battery failure ■ Drive down ■ Power up ■ Array critical ■ Array offline ■ Temperature warning ■ Temperature failure (this leads to a shutdown which is also logged) ■ Voltage warning ■ Voltage failure (this leads to a shutdown which is also logged) The event log stores the most recent 400 events.
Monitoring System Status Viewing the Most Recent Event The most recent voltage or temperature event displays in rotation with the date and time whenever the Adaptec Disk Array Administrator times out and returns to the System Menu. Viewing One Event at a Time You can view controller-related events one at a time. The events display in reverse chronological order (the most recent event first). To view one event at a time: 1 From the System Menu, select Event Log Menu and press Enter.
Monitoring System Status Capturing the Event Log File The entire event log can be saved to a file, which is useful if you want to print the log or attach it to an email message. These instructions assume that you are using HyperTerminal as the terminal emulator software. If you are using a different terminal emulator, your procedure may be different. To capture the event log file: 1 With HyperTerminal up and running as your RS-232 interface terminal, press CTRL-E until the Event Log appears.
Monitoring System Status Table 3-1 Configuration Information Group Field What Displays HOST Enabled Field is just a placeholder. SE/LVD Negotiation rate. Target ID SCSI ID of controller as set in Adaptec Disk Array Administrator. Controller LUN SOFT, NONE, or specific number as set in Adaptec Disk Array Administrator. Initiator ID SCSI ID of controller on channel 0 as set in Adaptec Disk Array Administrator. Ultra/U2 Hardware runs as Ultra2.
Monitoring System Status Table 3-1 Configuration Information (Continued) Group Field What Displays SEP Poll Rate Number of seconds as set in Adaptec Disk Array Administrator. Temperature ON or OFF as set in Adaptec Disk Array Administrator. Slot Flags ON or OFF as set in Adaptec Disk Array Administrator. Global Flags ON or OFF as set in Adaptec Disk Array Administrator. To display hardware information only: 1 From the System Menu, select Utilities Menu and press Enter.
Monitoring System Status Displaying Overall Statistics Aggregate statistics for all partition LUNs can be displayed in two formats: ■ List of general statistics. (Similar statistics are also available for individual partition LUNs. For more information, see Viewing Partition Statistics on page 2-25.
Monitoring System Status These statistics can help you interpret performance based on individual system configurations and OSs. They can be used to profile applications and their partition usage, and analyze what type of RAID level is applicable to your needs. Note: The statistics are provided as general information for your use. They are not intended for benchmarking purposes. To access the general array statistics: 1 From the System Menu, select Utilities Menu and press Enter.
Monitoring System Status Resetting Overall Statistics You can reset all of the overall statistics back to zero, which you may want to do if you are monitoring performance. Note: Resetting overall statistics also resets the statistics for each individual partition. See Resetting Partition Statistics on page 2-26 To reset overall statistics: 1 From the System Menu, select Utilities Menu and press Enter. The Utilities menu appears. 2 Select Overall Statistics and press Enter.
4 Managing Spares In This Chapter Managing Dedicated Spares 4-2 Enabling Dynamic Spares 4-3 Managing the Spare Pool 4-5 DuraStor RAID controllers automatically reconstruct redundant (fault-tolerant) arrays (RAID 3, RAID 4, RAID 5, RAID 50, and mirrored) if an array becomes critical and a proper-size spare disk drive is available. An array becomes critical when one member disk drive fails.
Managing Spares Managing Dedicated Spares Dedicated spares are unused disk drives that you assign as a spare to a specific array. Each disk drive must be as large as the smallest member of the array. You cannot use a dedicated spare in an array or as a pool spare. Using a dedicated spare is the most secure way to provide spares for your arrays but it is also expensive to keep an idle disk drive assigned to each array.
Managing Spares Note: If a disk drive was a member of an array and was removed from that array, you cannot use it as a spare until you clear the its metadata. For more information, see Clearing Metadata from a Disk Drive on page 6-3. 4 Select the disk drive you want to add as a spare and press Enter. The system confirms the change. 5 Select Yes and press Enter. Deleting a Dedicated Spare You can delete a dedicated spare from an array at any time.
Managing Spares With Dynamic Spares enabled, if you have spares or available drives, the controller first looks for a dedicated or spare pool drive for the reconstruction. If none is found, it uses an available drive, which it automatically assigns as a spare and starts reconstruction. You must ensure that the new or available drive is large enough to replace the smallest member in the array and does not contain metadata. See Clearing Metadata from a Disk Drive on page 6-3.
Managing Spares Managing the Spare Pool Disk drives in the spare pool are available for the reconstruction of redundant arrays. Once you assign a disk drive to the spare pool, it is not available for use as an array member or as a dedicated spare. In active-active mode, pool spares are available to both controllers. If a disk drive in an array on either controller fails, the controller can use a pool spare to reconstruct the array.
Managing Spares Displaying the Spare Pool You can display a list of all of the pool spares. To display the spare pool: 1 From the System Menu, select Pool Spare Menu and press Enter. The Pool Spare menu appears. 2 Select Display Pool Spare and press Enter. The Display Pool Spare window appears. 3 Press Esc to return to the Pool Spare menu.
5 Configuring the Controller In This Chapter Rebooting the Controller 5-2 Changing the Date and Time 5-2 Configuring the Host Channels 5-3 Understanding LUNs and Viewing LUN Information 5-5 Configuring the SCSI Channels 5-6 Understanding Operating Modes 5-8 Managing the Other Controller 5-11 Disabling SCSI Channel 3 5-14 Changing the Sample Rate 5-15 Understanding the Audible Alarm 5-16 Locking the Cache 5-17 Configuring the Battery 5-18 Changing the Utility Priority 5-20 Rescannin
Configuring the Controller Rebooting the Controller You may need to shut down and restart the controller after you make certain configuration changes or when you move the controller or make hardware changes. We strongly recommend that you shut down the controller gracefully (by following these steps) and do not just turn off the power. A normal shutdown ensures that the write-back cache has been flushed to the disk.
Configuring the Controller 3 Select Set Date and press Enter. The Set Date prompt appears. 4 Type the date using this format: mm/dd/yyyy. Press Enter. The system confirms that you want to make the change. 5 Select Yes and press Enter to make the change. The system confirms that the change is made. 6 Press Esc to return to the Configuration menu. To set the controller’s time: 1 From the System Menu, select Configuration Menu and press Enter. The Configuration menu appears.
Configuring the Controller Table 5-1 Host Channel Settings Host Channel Setting Modes Available Description Enable/ Disable Stand-alone single-port You should not disable the host channel when in single-port mode. Stand-alone dual-port In dual-port mode, you can disable a channel when you plan to shut down the host on that channel.
Configuring the Controller To configure the host channels: 1 From the System Menu, select Configuration Menu and press Enter. The Configuration menu appears. 2 Select Host Configuration and press Enter. If the controller is in stand-alone dual-port mode, the Channel menu appears. Select the channel you want to configure and press Enter. The next menu displayed depends upon the mode you are using. An * appears next to the current setting in each menu.
Configuring the Controller ■ SEP LUNs—Allow access to SEPs. A SEP LUN may be set to a value between 0 and 63 or None. None means that the SEP cannot be accessed via a LUN. For information about changing the SEP LUN, see Changing the SEP LUN on page 6-8. ■ Partition LUNs—Allow access to partitions on the controller. Partition LUNs may be set to any numeric value between 0 and 63. For information about changing the partition LUN, see Changing a Partition LUN on page 2-28.
Configuring the Controller ■ Initiator ID—SCSI ID assigned to each channel of the controller. The default ID is 6 for Channel 1 and 7 for Channel 2. You may need to change the initiator ID if the default conflicts with a SEP ID. You can set the ID to any number between 0 and 15. (In active-active mode, the initiator ID cannot be changed.) ■ Domain Validation—Checks for disk channel hardware and cable problems to ensure that your system can run at Ultra160 speed.
Configuring the Controller Understanding Operating Modes Your controller can operate in three different modes: ■ Active-active—Two controllers cooperate in system operation in a fault-tolerant manner. If one controller fails, the other takes over the failed controller’s work, providing another level of redundancy and allowing host access to continue. ■ Stand-alone dual-port—A single controller operating with two host ports.
Configuring the Controller of the Adaptec Disk Array Administrator screens. Controller 1 and 2 may also be referred to as Controller A and B, respectively. ■ Failback—The act of returning ownership of controller resources from a surviving controller to a previously failed (but now active) controller. The resources include disk arrays, cache data, and host ID information. ■ Failover—The act of temporarily transferring ownership of controller resources from a failed controller to a surviving controller.
Configuring the Controller Active-Active Operation Scenarios You should understand how the controllers act in different activeactive scenarios. ■ Dual Boot—When both controllers boot at the same time, they exchange information related to their current configuration and the ownership of resources. The time and date of the B controller is synchronized with that of the A controller.
Configuring the Controller 4 Select the option you want and press Enter. The system confirms that you want to make the change. 5 Select Yes and press Enter to make the change. The system confirms that the change is made. 6 Press Esc to return to the Option Configuration menu. Note: You must reboot the controller for the change to take effect. See Rebooting the Controller on page 5-2.
Configuring the Controller 2 Select Other Information and press Enter. The Other Information window appears. 3 Press Esc to return to the Other Controller menu. Shutting Down the Other Controller You can gracefully shut down the other controller if you are preparing to replace it or power off the RAID appliance. Always use the Shutdown Other Function in preference to the Kill Other Function. (See Killing the Other Controller on page 5-13 for details on when to use the Kill Other Function.
Configuring the Controller 2 Select Shutdown Both and press Enter. The system confirms that you want to make the change. 3 Select Yes and press Enter to make the change. Both controllers shut down. 4 Press Esc to return to the Other Controller menu. Killing the Other Controller You can kill the other controller (nongracefully shut it down), which causes the local controller to assume control of its resources.
Configuring the Controller Note: If the other controller was unplugged then plugged back in or replaced by a different controller, the surviving controller will automatically unkill the other controller. To unkill the other controller: 1 From the System Menu, select Other Controller Menu and press Enter. The Other Controller menu is only available if the system is configured to run in active-active mode. The Other Controller menu appears. 2 Select Unkill Other and press Enter.
Configuring the Controller Note: The controller will not boot if you disable SCSI channel 3 while in active-active mode. You must change your operating mode before disabling SCSI channel 3. To disable SCSI channel 3: 1 From the System Menu, select Shutdown/Restart and press Enter. The system confirms that you want to shut down. 2 Select Yes and press Enter. The system confirms that it has shut down. 3 Press Enter to reboot. While the controller reboots, hold down the Spacebar on your keyboard.
Configuring the Controller 2 Select New Sample Rate and press Enter. The New Sample Rate prompt appears. 3 Type the sample rate and press Enter. Understanding the Audible Alarm When the controller becomes too hot, or detects low or high voltage, an audible alarm sounds and an event message appears in the Adaptec Disk Array Administrator window and in the event log. Warning events are generated when the temperature or voltage enters the warning range.
Configuring the Controller Table 5-2 Alarm Thresholds Alarm Threshold What To Do When the Alarm Sounds CPU temperature Warning—0°C–5°C and 65°C–70°C Shutdown—0°C, 70°C, <0°C, and >70°C ■ Onboard temperature Warning—0°C–5°C and 45°C–50°C Shutdown—0°C, 50°C, <0°C, and >50°C ■ Same as above for the CPU temperature. VCC voltage Warning—5V -3.5% and +6.5% Shutdown—5V -6.5% and +10% ■ Check Adaptec Disk Array Administrator to confirm what the alarm means. See Chapter 3, Monitoring System Status.
Configuring the Controller 2 Select Option Configuration and press Enter. The Option Configuration menu appears. 3 Select Cache Lock and press Enter. The Cache Lock menu appears. The current setting is marked with an * next to it. 4 Select the option you want and press Enter. Configuring the Battery You can configure two settings related to the battery: ■ You can enable or disable the battery. The default setting is Battery Enabled. See page 5-18.
Configuring the Controller 3 Select Battery and press Enter. The Battery menu appears. The current setting is marked with an * next to it. 4 Select the option you want and press Enter. You must reboot the controller for the change to take effect. Changing the Battery Age/Disabling the Battery Life Monitor Your controller monitors the life of your battery and creates an event when the battery nears the end of its life. Controller batteries typically last about three years.
Configuring the Controller 4 While the controller reboots, hold down the Spacebar on your keyboard. The Flash Utility screen appears. 5 Press 6 for the Utility menu. The Utility menu appears. 6 Press 4 for Battery Life Monitor Options. The Battery Life Monitor menu appears. 7 Press the letter of the option you want: – A. New Battery Installed—Use this option to reset the battery age to zero when you install a new battery.
Configuring the Controller ■ Low—Use if streaming data without interruption, such as for a Web server, is more important than data redundancy. At this setting, the utilities run at a slower rate with minimal effects on host I/O. To change the utility priority: 1 From the System Menu, select Configuration Menu and press Enter. The Configuration menu appears. 2 Select Utility Priority and press Enter. The Utility Priority menu appears. The current setting is marked with an * next to it.
Configuring the Controller Pausing I/O The DuraStor 312R storage enclosure allows hot-swapping (removing and replacing disk drives while SCSI bus activity continues). The Hot Swap Pause Function suspends activity on all device channels used in the controller and protects data integrity on the connected disk drives and arrays. Note: Pausing I/O halts active I/O to the host.
Configuring the Controller Restoring Default Settings You can restore all of the controller’s default settings and change those that are critical to your configuration. You may want to do this if the controller is not working properly and you cannot determine why. To restore the default settings: 1 From the System Menu, select Configuration Menu and press Enter. The Configuration menu appears. 2 Select Restore Defaults and press Enter. The Restore Defaults menu appears.
6 Managing Disk Drives and Enclosures In This Chapter Managing Disk Drives 6-1 Managing SAF-TE Enclosures 6-8 Managing Disk Drives Using Adaptec Disk Array Administrator, you can control a variety of functions related to disk drives. You should also refer to your disk drive documentation and the DuraStor Installation and User’s Guide for information about related functions.
Managing Disk Drives and Enclosures Displaying All Disk Drives You can display this information for all disk drives connected to the controller: ■ Channel number ■ SCSI target ID number ■ Size ■ Manufacturer ■ Model number ■ Drive firmware revision If any of the disk drives are members of an array, the following information may also display: ■ Utility running—Expand, Verify, and so on. ■ Array number—The array’s sequential position in the controller’s array list.
Managing Disk Drives and Enclosures Clearing Metadata from a Disk Drive All member disk drives in an array contain metadata, which is used to identify array members after a controller is changed or restarted. If you have a disk drive that was previously a member of an array, you can clear its metadata. Disk drives with leftover metadata display Leftover in the Display Drives window. Once the metadata has been cleared, you can use the disk drive again in an array or as a spare.
Managing Disk Drives and Enclosures To change the write-back cache setting: 1 From the System Menu, select Configuration Menu and press Enter. The Configuration menu appears. 2 Select Disk Configuration and press Enter. The Disk Configuration menu appears. 3 Select Write-back Cache and press Enter. The Write-back Cache menu appears. The current setting is marked with an * next to it. 4 Select the option you want and press Enter. 5 Reboot or rescan to have your changes take effect.
Managing Disk Drives and Enclosures Enabling and Disabling SMART Changes You can enable or disable the ability to change the Self-Monitoring Analysis and Reporting Technology (SMART) settings for all disk drives connected to the controller. The setting options are: ■ Enable (default) ■ Disable ■ Don’t Modify—Use if you do not want the controller to change any disk drive’s SMART settings. On most disk drives, SMART is disabled by default by the manufacturer.
Managing Disk Drives and Enclosures To blink a disk drive LED: 1 From the System Menu, select Utilities Menu and press Enter. The Utilities menu appears. 2 Select Drive Utilities Menu and press Enter. The Drive Utilities menu appears. 3 Select Blink Drive LED and press Enter. The Select Drive(s) menu appears. 4 Select the disk drive you want and press Enter. That disk drive’s LED begins to blink. 5 Press Esc to stop blinking the LED.
Managing Disk Drives and Enclosures To take down a disk drive: 1 From the System Menu, select Utilities Menu and press Enter. The Utilities Menu appears. 2 Select Drive Utilities Menu and press Enter. The Drive Utilities Menu appears. 3 Select Down Drive and press Enter. The Select Drive(s) menu appears showing disk drives that are array members. 4 Select the disk drive you want and press Enter. The system confirms that you want to make the change. 5 Select Yes and press Enter to make the change.
Managing Disk Drives and Enclosures Managing SAF-TE Enclosures An SEP is a SCSI device from which the RAID controller can inquire about environmental conditions such as temperature, power supply and fan status, and the presence or absence of disk drives. The RAID controller can also tell the SEP about RAID activities such as disk drive rebuilds and failed disk drives. SAF-TE configuration settings are automatically enabled when the controller is installed in a RAID appliance that contains a SEP.
Managing Disk Drives and Enclosures 5 Select the option or number you want to use. See Table 6-1 for options. Table 6-1 SEP LUN Options To: Do This: Not assign the SEP an LUN ■ Type NONE and press Enter Keep the same LUN for the SEP at all times ■ Type the LUN you want to use and press Enter. This can be any number from 0 to 63 that is not already in use. The system confirms that you want to make the change. 6 Select Yes and press Enter to make the change.
Managing Disk Drives and Enclosures To change the SEP settings: 1 From the System Menu, select Configuration Menu and press Enter. The Configuration menu appears. 2 Select SEP Configuration and press Enter. The SEP Configuration menu appears. 3 Select SEP Settings and press Enter. The Poll Rate prompt appears. 4 Type the poll rate you want, in seconds, and press Enter. The Temperature menu appears. The current setting is marked with an * next to it. 5 Select the option you want and press Enter.
7 Troubleshooting In This Chapter Adaptec Technical Support 7-1 Input Problems 7-2 Terminal Emulator and COM Port Problems 7-2 Array Problems 7-3 Host SCSI Channel Problems 7-4 Device SCSI Channel Problems 7-5 Problems During Bootup 7-6 Warning and Error Events 7-8 Using the Loader Diagnostics Menu 7-10 Using the Loader Utility Menu 7-11 Understanding SCSI Errors 7-11 Adaptec Technical Support For assistance configuring and using your Adaptec product, contact your authorized distributo
Troubleshooting Input Problems Problem: The system won’t accept input from the keyboard. Ensure that you have set the input mode to external: 1 On the I/O connectivity panel of the DuraStor 6200SR, turn the switch to EXT. 2 On the DuraStor 6200SR Operator Control Panel, use the arrow buttons to: a Choose Hardware Menu, then press Enter. b Choose Mode, then press Enter. c Choose Serial Port:Ext Mode, then press Enter.
Troubleshooting Problem: Nothing is displayed on the terminal emulator screen. The probable cause of this problem is a bad RS-232 cable connection or swapped transmit/receive lines. If the cable is properly connected on both ends, try a null modem adapter, which will reverse the RS-232 transmit and receive signals. The need for a null modem adapter depends on both your RAID appliance and the RS-232 cable you are using. Problem: Screen is updated, but will not respond to keystrokes.
Troubleshooting disk drives from two different vendors may differ in capacity by 100 MB. With a backoff of 0%, you would not be able to replace an array member’s slightly larger 18-GB disk drive with a smaller 18GB disk drive. If you intend to only use identical disk drives from the same vendor, then you can use a backoff of 0%. The default setting is 1% backoff. This default allows you to easily work with disk drives that have the same nominal capacity, but different actual capacities.
Troubleshooting other devices on the host SCSI channel. If you have a long SCSI cable, try a different or shorter cable. Problem: Only one array is displayed during host SCSI BIOS scan. Check to ensure that LUN support is enabled. Use Display Array Status to check the LUN assignment for each array. If LUN 0 is not assigned to an array, or some other LUN numbers are skipped, use the Change LUN Assignment option for each array until you have LUN numbers starting at 0 with no LUNs skipped.
Troubleshooting Problems During Bootup The following sections describe problems you might encounter during POST or during bootup, and explain how to resolve those problems. POST shows problems related to the processor, logic, and memory. Problem: The controller hangs during bootup. Ensure that all cables are connected properly for your operating mode. (Refer to the DuraStor Installation and User’s Guide for details.) Ensure that your system is properly terminated.
Troubleshooting Problem: The system hangs during a disk drive scan. Follow these steps to resolve the problem: 1 Check the storage enclosure to make sure everything is properly connected. 2 Remove and replace the disk drive that failed the scan. 3 If the storage enclosure and the disk drive work properly, replace the controller. Problem: An active-active controller pair hangs during bootup disk drive scan (typically after displaying CT_Init on the RS-232 display).
Troubleshooting Warning and Error Events There are a number of conditions that trigger warning or error events, activate the audible alarm, and may affect the state of the Status and Fault LEDs. The audible alarm sounds mainly when Adaptec Disk Array Administrator displays a warning or error event. Table 7-1 and Table 7-2 provide a list of warning and error events and recommended actions to take to fix the problems.
Troubleshooting Table 7-1 Warning Events (Continued) Event Definition Recommended Action DRIVE DOWN An error occurred with the disk drive and it was downed, removing it from the active array. Add a spare to the array or the spare pool. Then replace the bad disk drive. See Adding a Dedicated Spare on page 4-2 or Adding a Spare to the Spare Pool on page 4-5. REPLACE BATTERY The battery is approaching its 3-year life span. Replace the battery.
Troubleshooting Errors Error events let you know that something related to the storage enclosure, controller, or disk drives has failed and requires immediate attention. Table 7-2 defines each error event and recommends the action you should take. Table 7-2 Error Events Event Definition Recommended Action BATTERY FAILED A failure in the battery pack and/or charging interface has been detected. Replace the controller’s battery. Refer to DuraStor 6200SR and 312R Installation and User’s Guide.
Troubleshooting Using the Loader Utility Menu If you have any diagnostic errors, contact Adaptec technical support. (See page 7-1 for contact information.) Understanding SCSI Errors The event log includes SCSI errors reported by SEPs and disk drives on your system. If you see these errors in the event log, the information below may assist you. For more information about viewing the event log, see Displaying the Event Log on page 3-1.
Troubleshooting Table 7-3 Sense Key Descriptions Sense Key Description 0h No sense 1h Recovered error 2h Not ready 3h Medium error 4h Hardware error 5h Illegal request 6h Unit attention 7h Data protect 8h Blank check 9h Vendor-specific Ah Copy aborted Bh Aborted command Ch Obsolete Dh Volume overflow Eh Miscompare Fh Reserved 7-12
Troubleshooting Disk Channel Errors Table 7-4 ASC and ASCQ Descriptions ASC ASCQ Descriptions 0C 02 Write error—auto-reallocation failed 0C 03 Write error—recommend reassignment 11 00 Unrecovered read error 11 01 Read retries exhausted 11 02 Error too long to correct 11 03 Multiple read errors 11 04 Unrecovered read error—autoreallocation failed 11 0B Unrecovered read error—recommend reassignment 11 0C Unrecovered read error—recommend rewrite the data 47 00 SCSI parity error
Troubleshooting Table 7-5 Disk Channel Error Codes Error Code 04 Description Data overrun or underrun occurred while getting sense data. 05 Request for sense data failed. 20 Selection timeout occurred (displayed as Sel Timeout). 21 Controller detected an unrecoverable protocol error on the part of the target. 22 Unexpected bus-free condition occurred (displayed as Unex Bsfree). 23 Parity error on data was received from a target (displayed as Parity Err).
Troubleshooting Voltage and Temperature Errors and Warnings Most voltage and temperature errors and warnings occur due to the storage enclosure. Check the storage enclosure configuration first.
A Storage Concepts In This Appendix Devices A-1 Controllers A-2 Storage Systems A-2 Channels A-2 Disk Drives A-2 Arrays A-3 Free Space A-4 Partitions A-4 Redundancy A-6 Array Types A-6 Disk Array Administrator uses specific terms to describe storage concepts and configurations. If you are new to storage technology and array configurations, this section will help you understand basic Redundant Array of Independent Disks (RAID) technology and terminology.
Storage Concepts Controllers A controller is a hardware device that performs input/output (I/O) functions. Controllers also perform other functions such as read and write caching and RAID management. They can be internal (inside the host computer) or external (in an enclosure). Controllers are also known as an adapters, embedded storage controllers, or Host Bus Adapters (HBA). Storage Systems A storage system exists when the RAID controller resides outside of the server enclosure.
Storage Concepts ■ Channel Number—Indicates to which channel (bus) on the controller the SCSI drive is attached. ■ SCSI ID (also known as target ID)—Identifies the drive on the SCSI channel. ■ Logical Unit Number (LUN)—The number assigned to a subdevice (logical unit) of a SCSI device, which is usually zero for a disk drive. Note: If you are using an external controller, the host computer addresses arrays via the controllers’ ID and a different LUN for each array.
Storage Concepts Figure A-1 represents an array made up of two disk drives. The free space of the larger drive is not used. Array A Partition A1 (Used) Partition A2 (Used) Free Space Drive 1 Drive 2 Figure A-1 One array made up of two disk drives Free Space Free space refers to the space on a an initialized disk drive that is not in use by an array. Arrays are created from free space, therefore creating an array reduces the amount of free space on a disk drive.
Storage Concepts 2 Contiguous storage space produced during the RAID creation process. See Figure A-2. Array on Virtual Free Space Before Array Creation Partition After Array Creation Free Space Partition After Array Creation Free Space Before Array Creation Figure A-2 Array Made of Single Partitions These partitions are not seen by the operating system. Rather, they are the building blocks of a virtual disk. This virtual disk is seen by the operating system as a single disk drive.
Storage Concepts Redundancy Redundancy refers to the capability of preventing data loss if a disk drive fails. Some array types give you this capability in one of two methods: ■ Two identical copies—Data is written to partitions on two disk drives, resulting in the same data being stored in two places. Mirror sets, for example, use this method. ■ Parity—Error correction information is distributed across partitions on three or more disk drives.
Storage Concepts Table A-1.
Storage Concepts Volume Set A volume set, also known as a virtual disk or a JBOD, is a single disk drive that is not used in an array. Depending on the controller, a volume set can also be a partition that equals the full capacity of a given disk drive. In some controllers, it can be a daisy chain of multiple drives. Volume sets are useful if you have a single disk drive and you do not want to use it as a spare. Figure A-3 represents a volume set made up of one disk drive. .
Storage Concepts A stripe set distributes the data among the partitions in a way that optimizes access speed (performance). By making a single request for the amount of data in a stripe, an application can get all of the array’s member disk drives to work for it simultaneously, thus optimizing large sequential access speed or concurrent access for multiple small I/O requests. When used with small stripe sizes (compared to average I/O request size), it can improve singlestream data transfer rate.
Storage Concepts Applications Suitable for Striped Sets Compared to RAID arrays, striped sets are not well-suited for online storage of important data. They can, however, be useful for storing the following: ■ Program image libraries or run-time libraries ■ Large tables or read-only data structures The above applications can be backed up on tape or on other RAID arrays for security, while a copy on a striped array can provide rapid application access.
Storage Concepts Applications Suitable for Mirror Sets Mirror sets are particularly suitable for the following types of applications: ■ Data for which reliability and availability requirements are the first priority ■ Backing up of online data with minimum application downtime RAID 5 The RAID 5 set uses parity to provide redundancy. RAID 5 disk drives may operate independently of each other allowing multiple simultaneous read and write operations.
Storage Concepts RAID 5 Set A 12 GB Chunks 1,2,3,4,5,6,7,8, 9,10,11,12,13,14,15... Drive 1 Drive 2 Drive 3 Drive 4 Free Space Partition A1 4 GB Chunks 1,P*,7,10,13... Partition A2 4 GB Chunks 2,4,P*,11,14... Partition A3 4 GB Chunks 3,5,8,P*,15... Partition A4 4 GB Chunks P*,6,9,12,P*... *P = Parity Figure A-6 RAID 5 set Applications Suitable for RAID 5 Sets These types of applications are suitable for RAID 5 sets: ■ Transaction read requests are high.
Storage Concepts Stripe Set of Mirror Sets (RAID 0/1) Multilevel arrays or hybrid arrays are arrays that contain other arrays. A stripe set of mirror sets, also known as RAID 0/1, is an multilevel array made up of two or more equal-sized mirror sets. The data in a stripe set of mirror sets is redundant. The mirrored layers of this array enhance data availability by protecting against loss due to member disk drive failure. The striped layers improve performance.
Storage Concepts The stripe set of mirror sets is the top-level array, and mirror sets A, B, and C are the underlying arrays. Applications Suitable for RAID 0/1 Sets The following types of applications benefit from the increased data availability and performance provided by RAID 0/1 sets: ■ Any data whose value and volume justifies placing it on mirrored disk storage.
Storage Concepts Stripe Set of RAID 5 Sets 16 GB Chunks 1,2,3,4,5,6,7,8,9... RAID 5 Set B 8 GB Chunks 2,4,6,8... RAID 5 Set A 8 GB Chunks 1,3,5,7... Drive 1 Drive 2 Partition A Partition B 4 GB 4 GB Chunks Chunks 1,7,P*,13... 3,P*,9,15... Drive 4 Drive 3 Partition C 4 GB Chunks P*,5,11,P*... Partition A 4 GB Chunks 2,8,P*,14... *P = Parity Drive 5 Drive 6 Partition B Partition C 4 GB 4 GB Chunks Chunks 4,P*,10,16... P*,6,12,P*...
B SAF-TE Implementation In This Appendix What Is SAF-TE and What Are SEPs? B-1 Enclosure Considerations B-2 Administrator Utility SEP Configuration Options B-3 Host Communication Methods B-3 This section describes how to implement the SCSI Accessed FaultTolerant Enclosures (SAF-TE) Interface Specification and how to adjust specific parameters. The DuraStor 6200S external RAID controller is fully compliant with the SAF-TE Interface Specification 1.04 (R041497).
SAF-TE Implementation Enclosure Considerations The DuraStor Storage Subsystem includes SEPs. The controller provides information to the user via the enclosure LEDs and the host interface. The controller uses a standard set of SCSI commands to communicate with the SEPs via back-end disk channels. This communications path is managed by the controller and is transparent to the user.
SAF-TE Implementation Administrator Utility SEP Configuration Options SAF-TE configuration settings are automatically enabled when the DuraStor 6200S RAID controller controller is installed in an enclosure that contains a SEP. No changes are required to the default configuration settings to support SAF-TE. However, the user can configure configure the SEP LUNs and the SEP settings to fit the user’s specific environment.
Glossary A active-active Active-active mode is when two controllers in a storage system cooperate to provide redundancy. If one controller fails, the remaining controller takes over. To accomplish this, each controller has two host ports, one of which is normally active, the other normally passive. In a failed-over configuration, the passive port becomes active and assumes the identity of the failed controller. In active-active mode, arrays can be accessed only by the controller that currently owns them.
Glossary chunk A contiguous set of data written onto a single disk drive when a stripe set, RAID 5 set, or stripe set of mirror sets distributes, or stripes, data across its respective disk drives. See also RAID 5; stripe set (RAID 0); stripe set of mirror sets (RAID 0/1); stripe set of RAID 5 sets (RAID 50). chunk size See stripe size. controller A hardware device that performs I/O functions. Controllers also perform other functions such as read and write caching and RAID management.
Glossary E enclosure A physical housing for disk drives, which can be connected externally to a computer. An enclosure usually contains one or more power supplies, fans, and temperature sensors. See also SAF-TE (SCSI Accessed Fault-Tolerant Enclosure). enclosure ID Enclosures that are controlled by a SAF-TE or SES (SCSI Enclosure Services) processor are identified by an enclosure ID. The enclosure ID consists of the channel (bus) number, SCSI ID (also known as target ID), and LUN (Bus:ID:LUN).
Glossary H HBA (host bus adapter) An HBA is the critical link between a host server or workstation and a storage subsystem, integrating computing platforms, OSs, and I/O protocols to ensure proper interoperability and functionality. The HBA provides direct storage connectivity from the system to data within the storage subsystem and enables stable, high-speed transmission of information and files.
Glossary L logical unit number See LUN. loop address A loop address is an fibre channel (FC) term that indicates the unique ID of a node in FC loop topology. A loop address is sometimes referred to as a Loop ID. LUN Stands for logical unit number. The number assigned to a subdevice (logical unit) of a SCSI device. Each SCSI device can contain up to 63 subdevices numbered 0 through 63; however, most SCSI devices contain only one subdevice (LUN 0).
Glossary partition A subdivision of a disk or storage area. There are three main types of partitions: 1 A portion of a physical or virtual disk drive that functions as a separate unit. A single disk drive can be divided into several partitions, each of which the OS sees as a separate device with its own volume name (such as D:, E:, F:, and so on). These partitions are usually created by the OS. 2 Contiguous storage space produced during the RAID creation process.
Glossary R RAID 0 See stripe set (RAID 0). RAID 0/1 See stripe set of mirror sets (RAID 0/1). RAID 0/5 See stripe set of RAID 5 sets (RAID 50). RAID 1 See mirror set (RAID 1). RAID 3 A RAID 3 set is an array made up of three or more disk drives. It uses parallel access, meaning all member disk drives participate concurrently in every I/O operation directed at the array.
Glossary redundancy The capability of preventing data loss if a disk drive fails. Some array types give you this capability using one of two methods: two identical copies or parity.
Glossary SCSI channel termination See termination. SCSI device A single unit on a SCSI bus that originates or services SCSI commands. A SCSI device is identified by a unique SCSI address. SCSI devices can act as initiators or targets. SCSI ID The number assigned to each SCSI device attached to a SCSI channel. Each device has its own unique SCSI ID. Also known as the target ID or SCSI address. See also channel; disk ID; enclosure ID.
Glossary storage system A storage system is when the RAID controller resides outside of the host system enclosure. The subsystem is controlled from the host system using storage management software or firmware (such as Adaptec Disk Array Administrator). Since the controller is accessed using standard SCSI protocols, the need for specific OS drivers is eliminated.
Glossary termination Termination (also known as a terminator block) refers to the electrical connection at each end of a SCSI bus. The function of a terminator block is to provide for a proper electrical transmission of the data across the cable. SCSI buses require that a terminator be placed on the output SCSI connector on the last SCSI peripheral. Data errors may occur in a SCSI bus that is not terminated. topology A network topology refers to the physical layout of nodes on a network.
Index A A and B controllers. See controllers, 1 and 2 active-active mode adding arrays 5-10 array ownership 2-18, 5-9 definition 5-8 deleting arrays 5-10 disk drives 2-4 dual boot 5-10 failback 5-9 to 5-10 failover 5-9 to 5-10 host channel 0 5-9 killing 5-9, 5-13 operations 5-10 other controller 5-11 to 5-12 pool spares 4-1, 4-5, 5-10 SCSI channel 3 5-15 shutting down both controllers 5-12 terminology 5-8 unkilling 5-9, 5-13 Adaptec 7-1 alarm.
Index pausing I/O 5-22 rebooting 5-2 rescanning disk drives 5-21 restoring defaults 5-23 SAF-TE enclosures 6-8 sample rates 5-15 SEP 6-8 shutting down 5-12 time 5-3 utility priority 5-20 B backoff percentage 7-3 battery 5-18 to 5-19 battery life monitor 5-19 to 5-20 baud rate 1-3, 7-2 blinking LEDs 6-5 bootup troubleshooting 7-6 bus speed 5-6 buses A-2 C cache lock 5-17 channel 3, enabling/disabling 5-8, 5-14 to 5-15 channel number 2-12, A-3 channels configuring 5-6 definition A-2 errors 7-13 rescanning
Index hot-swapping 5-22 LEDs 6-5 member number 6-2 metadata 6-3 rescanning 6-6 rescanning channels 5-21 SMART 6-5 spare pools 4-5 spare types 4-1 status 2-12 testing 6-7 TUR command 6-7 disk IDs A-2 disks. See disk drives domain validation 5-7 Down Drive Function 6-6 drive numbers 2-12 drive requirements 2-1 drives.
Index numbering 5-5 operating systems 2-3 overlapping 2-3 parititon LUNs 5-6 SEP 6-8 SEP LUNs 5-6 statistics 3-7 viewing 5-6 M member number 6-2 metadata 6-3 mirror set A-6, A-10 multiple-partition arrays definition 2-2 expanding 2-16 partitions 2-22 mute setting 5-16 N naming arrays 2-2, 2-6 naming partitions 2-27 O online help 1-2 operating modes 5-8 to 5-15 See also active-active mode, stand-alone mode other controller 5-11 to 5-12 P parity A-6 partition LUNs 5-6 partitions 2-16 to 2-29 adding 2-9 c
Index S SAF-TE B-1 to B-3 SEPs and SAF-TE enclosures 6-8 to 6-10 and SAF-TE implementation B-1 to B-3 SAF-TE enclosures 6-8 to 6-10 SAF-TE Environmental Processor. See SEP sample rate 5-15 screen display 1-5 SCSI BIOS 7-4 channels configuring 5-6 troubleshooting 7-4 to 7-5 domain validation 5-7 SCSI channel 3 5-8, 5-15 enabling/disabling 5-14 to 5-15 SCSI ID 5-7, A-3 SecRd statistic 2-25 SecWt statistic 2-25 Self-Monitoring, Analysis and Reporting Technology. See SMART self-test.
Index terminal emulator 1-2 troubleshooting 7-2 terminal program parameters 1-2 Test Unit Ready command.
R Adaptec, Inc. 691 South Milpitas Boulevard Milpitas, CA 95035 USA © 2001 Adaptec, Inc. All rights reserved. Adaptec and the Adaptec logo are trademarks of Adaptec, Inc. which may be registered in some jurisdictions. PART NUMBER: 512933-06, Ver.
