PRELIMINARY RELEASE Hitachi Freedom Storage™ Lightning 9900™ V Series LUN Expansion and Virtual LVI/LUN User’s Guide
PRELIMINARY RELEASE
PRELIMINARY RELEASE © 2002 Hitachi Data Systems Corporation, ALL RIGHTS RESERVED Notice: No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or stored in a database or retrieval system for any purpose without the express written permission of Hitachi Data Systems Corporation.
PRELIMINARY RELEASE Trademarks Hitachi Data Systems is a registered trademark and service mark of Hitachi, Ltd. The Hitachi Data Systems design mark is a trademark and service mark of Hitachi, Ltd. Hi-Track is a registered service mark of Hitachi Data Systems Corporation. Graph-Track, Freedom Storage, Lightning 9900V are trademarks of Hitachi Data Systems Corporation. VMS is a registered trademark of Compaq Computer Corporation. Tru64 is a trademark of Compaq Computer Corporation.
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PRELIMINARY RELEASE vi Preface
PRELIMINARY RELEASE Preface This Hitachi Freedom Storage™ Lightning 9900™ V Series LUN Expansion Virtual LVI/LUN User’s Guide provides instructions for using these options on the 9900V Remote Console, using the web client Java™ applet program for the 9900V subsystem.
PRELIMINARY RELEASE viii Preface
PRELIMINARY RELEASE Contents Chapter 1 Overview of LUN Expansion and Virtual LVI/LUN............................................................... 1 1.1 1.2 Chapter 2 Preparing To Use LUN Expansion or Virtual LVI/LUN ...................................................... 11 2.1 2.2 2.3 Chapter 3 The LUSE/VLL Panel, LUSE Tab Components ............................................... 15 LUSE Operations................................................................................. 19 3.2.
PRELIMINARY RELEASE List of Figures x Figure 1.1 Figure 1.2 Figure 1.3 LUSE configuration ......................................................................... 3 Illustration of Virtual LVI/LUN Operations ............................................. 4 Volume Configuration ..................................................................... 6 Figure 2.1 Figure 2.2 Figure 2.3 Figure 2.4 Remote Console Main Panel, Information Tab........................................12 View Mode..................
PRELIMINARY RELEASE List of Tables Table 1.1 Table 1.2 Table 1.3 Table 1.4 Table 1.5 Table 1.6 LUSE Specifications.........................................................................2 VLL LUSE Specifications ...................................................................2 Virtual LVI/LUN Specifications ...........................................................7 Minimum and Maximum Virtual LUN Volume Capacities (Open Systems)..........8 Control Cylinders/Control Area for Each LVI/LU Type.........
PRELIMINARY RELEASE xii Contents
PRELIMINARY RELEASE Chapter 1 1.1 Overview of LUN Expansion and Virtual LVI/LUN Overview of LUSE Operations LUSE operations allow hosts that can only use a limited amount of LUs per fibre interface to have access to larger amounts of data using expanded LUs. LUSE operations include the following: Creating new expanded LUs (LUSE volumes) (see section 3.2). Releasing expanded LUs (LUSE volumes) to individual LUs (see section 3.2.2). Changing the size of a LUSE volume (see section 3.2.3).
PRELIMINARY RELEASE Table 1.1 LUSE Specifications Parameter OPEN-8 OPEN-9 OPEN-E OPEN-L LU Capacity 7.3 GB 7.3 GB 14.5 GB 36.4 GB Possible number of expanded LUs 2 - 36 LUs 2 - 36 LUs 2 - 36 LUs 2 - 36 LUs Expanded LU Capacity 14.6 GB 264.4 GB 14.7 GB 265.8 GB 29.1 GB 524.4 GB 72.9 GB 1312.
PRELIMINARY RELEASE LUSE (1:00) The host recognizes a set of LDEVs as one big LDEV. LDEV (1:00) LDEV (1:01) LDEV (1:03) Host LDEV (1:04) LDEV (1:05) Figure 1.
PRELIMINARY RELEASE 1.2 1.2.1 Overview of Virtual LVI/LUN Virtual LVI/LUN Parameters The Virtual LVI/LUN (VLL) option allows you to configure variable-size volumes, which are usually smaller than normal (fixed-size) volumes. Virtual LVI/LUN improves data access performance by reducing logical device contention and host I/O queue times, particularly when several frequently accessed files are located on the same volume.
PRELIMINARY RELEASE Note: Virtual LVI/LUN used in conjunction with FlashAccess can achieve greater performance improvements than when either of these options is used individually. For more information on FlashAccess, see Hitachi Freedom Storage™ Lightning 9900™ V Series FlashAccess User’s Guide (MK-92RD102). A parity group is called a normal or fixed-size volume (FV) when all of its member LDEVs are fixed-size.
PRELIMINARY RELEASE A normal volume consists of a certain number of fixed volumes, depending on the emulation type, and some free space. A Virtual LVI/LUN volume usually consists of at least one fixed volume (FV), customized volumes (CV or VLL volumes), and free space (see Figure 1.3). Space FV Space FV FV CV FV FV FV FV FV Space FV FV Normal Configuration Figure 1.
PRELIMINARY RELEASE Table 1.3 lists the Virtual LVI/LUN specifications, and Table 1.4 lists the minimum and maximum Virtual LVI/LUN volume capacities for open systems. Each Virtual LVI/LUN volume has its own assigned unit control block (UCB), and multiple LVI/LUN types can be configured within each Virtual LVI/LUN volume, so long as the device type is from the same device family (e.g. all open volumes, or all 3390s).
PRELIMINARY RELEASE Table 1.4 Minimum and Maximum Virtual LUN Volume Capacities (Open Systems) Setting size (MB) Actual Size (MB) Notes 35 35.15625 Minimum VLL volume capacity 500 500.625 1000 1000.546875 2000 2000.390625 2347 2347.03125 Maximum OPEN-3 volume size 7007 7007.34375 Maximum OPEN-8 volume size 7042 7042.5 Maximum OPEN-9 volume size 13893 13893.04688 Maximum OPEN-E volume size Table 1.5 shows maximum VLL volume capacities of each emulation type. Table 1.
PRELIMINARY RELEASE 1.2.2 Virtual LVI/LUN Size Calculation The Virtual LVI/LUN Remote Console function enables you to configure LDEVs by dividing them into several devices. Virtual LVI/LUN allows you to assign a specific number of physical cylinders or MB to each Virtual LVI/LUN volume for maximum control over the volume size.
PRELIMINARY RELEASE 1.2.3 SSID Requirements) The 9900V subsystem is configured with one SSID for each of 256 devices and up to four SSIDs per CU image. Each SSID must be unique within each host system. Table 1.6 shows the relationship between emulation types of controllers and SSIDs. Table 1.
PRELIMINARY RELEASE Chapter 2 2.1 Preparing To Use LUN Expansion or Virtual LVI/LUN Set Up the 9900V Subsystem and Remote Console PC(s) Before launching LUN Expansion or Virtual LVI/LUN, you must take several preliminary steps. For detailed instructions, please refer to Hitachi Freedom Storage™ Lightning 9900™ V Series Remote Console – Storage Navigator User’s Guide (MK-92RD101). These include the following: Install the 9900 subsystem.
PRELIMINARY RELEASE Figure 2.
PRELIMINARY RELEASE 2.3 Changing to Modify Mode If you are going to implement any changes for LUN Expansion or Virtual LVI/LUN, you must be in Modify mode. The subsystem information icons (see Figure 2.2) are on the upper right corner of the Remote Console Main panel, and they appear on all option panels as well. These icons are described in detail in Hitachi Freedom Storage™ Lightning 9900™ V Series Remote Console – Storage Navigator (MK-92RD101).
PRELIMINARY RELEASE 14 Figure 2.2 View Mode Figure 2.3 Mode Changing Confirmation Message Figure 2.
PRELIMINARY RELEASE Chapter 3 3.1 LUN Expansion (LUSE) Operations The LUSE/VLL Panel, LUSE Tab Components The LUN Expansion (LUSE)/Virtual LVI/LUN (VLL) button ( The LUSE tab is the default view (see Figure 3.1). Figure 3.1 ) opens the LUSE/VLL panel.
PRELIMINARY RELEASE The LDEV Information outline (see Figure 3.2) is on the upper left of the panel. Figure 3.2 LDEV Information Outline Detail (From the LUSE/VLL Panel, LUSE Tab) LDEV Information outline displays an outline view of the CU and LDEV numbers installed on the subsystem (e.g., CU 00 and has a number of LDEVs, including 00:00). The format of the LDEV number changes if the LDEV is an expanded (LUSE) volume, e.g.
PRELIMINARY RELEASE The LDEV table is on the upper right corner of the LUSE tab, and displays data for the LDEV that you have selected in the LDEV Information outline. Figure 3.3 LDEV Detail Table (From the LUSE/VLL Panel, LUSE Tab) The LDEV Detail table displays detailed information for all open-system LDEVs in the selected CU. If you have selected a normal LDEV, the information in this section is for the top LDEV.
PRELIMINARY RELEASE The LDEV Operation detail is on the lower right of the LUSE tab. Figure 3.4 LDEV Operation Detail (From the LUSE/VLL Panel, LUSE Tab) The LDEV Operation detail has the following features: The Select a Free LDEV drop-down box lists the free LDEVs of the selected CU. The Expanded LDEVs list displays LDEVs that are selected as LUSE volume components. An LDEV is added to this list when the <
PRELIMINARY RELEASE 3.2 LUSE Operations LUSE operations include the following: Creating LUSE volumes (see section 3.2.1), Releasing LUSE volumes (see section 3.2.2), and Changing LUSE capacities (see section 3.2.3). 3.2.1 Creating a LUSE Volume WARNING: LUSE creation is a destructive operation. Move and/or back up your data before proceeding. There are two ways to create a LUSE volume: Using the LDEV Operation detail (on the lower right of the panel; refer to Figure 3.
PRELIMINARY RELEASE 20 Figure 3.5 Set LUSE Confirmation Panel Figure 3.6 Apply Confirmation Message Figure 3.
PRELIMINARY RELEASE 3.2.1.2 Creating a LUSE Volume From the LDEV Table 1. Change to Modify mode (refer to section 2.3 if you need instructions). Select the LUN Expansion (LUSE)/Virtual LVI/LUN (VLL) button ( ) to open the LUSE/VLL panel. The LUSE tab is the default view (refer to Figure 3.1). 2. Select a CU number from the LDEV Information outline (on the upper left corner of the LUSE tab; refer to Figure 3.2). The LDEV table (on the upper right corner of the LUSE tab; refer to Figure 3.
PRELIMINARY RELEASE 22 Figure 3.8 Selecting Free LDEVs for LUSE Volume Figure 3.
PRELIMINARY RELEASE 3.2.2 Releasing a LUSE Volume WARNING: Releasing LUSE volumes is a destructive operation. Move and/or back up your data before proceeding. 1. Change to Modify mode (refer to section 2.3 if you need instructions). Select the LUN Expansion (LUSE)/Virtual LVI/LUN (VLL) button ( ) to open the LUSE/VLL panel. The LUSE tab is the default view (refer to Figure 3.1). 2. Select a CU number from the LDEV Information outline (on the upper left corner of the LUSE tab; refer to Figure 3.2).
PRELIMINARY RELEASE Figure 3.10 Selecting LUSE Volume(s) To Be Released Figure 3.
PRELIMINARY RELEASE Figure 3.12 Release LUSE Confirmation Panel 3.2.3 Changing LUSE Capacities You may not change the capacity of an existing LUSE volume. If you want a LUSE volume to have a different capacity, you must release the LUSE volume (refer to section 3.2.2) and then re-define the LUSE volume (refer to section 3.2.1).
PRELIMINARY RELEASE 26 Chapter 3 LUN Expansion (LUSE) Operations
PRELIMINARY RELEASE Chapter 4 4.1 4.1.1 Virtual LVI/LUN (VLL) Operations The Virtual LVI/LUN Panels LUSE/VLL Panel, VLL Tab The LUN Expansion (LUSE)/Virtual LVI/LUN (VLL) button ( ) opens the LUSE/VLL panel. The LUSE tab is the default view. Select the VLL tab (see Figure 4.1). Figure 4.
PRELIMINARY RELEASE The Parity Group - LDEV outline (on the upper left of the VLL tab; see Figure 4.2) shows the hierarchical structure of the subsystem, including a disk group number (e.g., Box 1), the parity group number (e.g., 1-1), the RAID level (e.g., 3D+1P), and the CU number (e.g., 1-1(1). Figure 4.2 The Parity Group - LDEV Outline (From the LUSE/VLL Panel, VLL Tab) icon indicates that there are no pending VLL actions on that CU.
PRELIMINARY RELEASE When you select a Control Unit in the Parity Group – LDEV outline, the LDEV Information table (on the upper right of the VLL tab; see Figure 4.3) displays information about the logical volumes in that control unit.) Figure 4.3 LDEV Information Table (From the LUSE/VLL Panel, VLL Tab) The No column shows the volume number. Note: Only 24 volumes will fit on a page. The 25th and higher volumes can be displayed by scrolling. The CU:LDEV column shows an icon and the CU and LDEV number.
PRELIMINARY RELEASE 4.1.2 Set SSID Panel Figure 4.
PRELIMINARY RELEASE The Set SSID panel has the following features: The SSID outline displays CU numbers (e.g., CU 00), SSID boundary areas (e.g., 00-3F), and SSID (e.g., 0004). ---- indicates a boundary area with no SSID indicates that the CU number is not extracted. indicates that the CU number is extracted. indicates the LDEV boundary area. The SSID table is used to set the SSID boundary area. – The CU column shows a CU number that contains an LDEV boundary with no SSID.
PRELIMINARY RELEASE 4.2 Virtual LVI/LUN Operations Before starting a VLL operation on a selected disk subsystem, be sure to disconnect the mainframe volumes from the host and/or remove the LU paths to the open volumes. For instructions on removing LU paths, see Hitachi Freedom Storage™ Lightning 9900™ V Series LUN Manager User’s Guide (MK-92RD104). Virtual LVI/LUN operations include: Converting logical volumes to free space (see section 4.2.1), Creating VLL volumes (see section 4.2.
PRELIMINARY RELEASE To convert a normal volume to free space: 1. Change to Modify mode (refer to section 2.3 if you need instructions). Select the LUN Expansion (LUSE)/Virtual LVI/LUN (VLL) button ( ) to open the LUSE/VLL panel. The LUSE tab is the default view (refer to Figure 3.1). Select the VLL tab (refer to Figure 4.1). 2. On the Parity Group – LDEV Outline (on the upper left corner of the panel; refer to Figure 4.2) Select the LDEV folder to open a list of Control Units.
PRELIMINARY RELEASE 34 Figure 4.5 Volume to Space Pop-Up Menu Figure 4.
PRELIMINARY RELEASE 4.2.2 Creating VLL volumes The Install VLL volume function allows you to define and install one or more Virtual LVI/LUN volumes under an existing volume. Note: The Install VLL volume Function allocates VLL volumes in the order in which the function finds sufficient free space for the VLL volumes, so for optimum space allocation you should allocate VLL volumes in descending order of capacity. 1. Change to Modify mode (refer to section 2.3 if you need instructions).
PRELIMINARY RELEASE 5. After creating all of the VLL volumes you want to create, select the Next button to display the Install CV Panel (2) (see Figure 4.10), which will display the VLL volumes to be created in the table on the top. In this panel: a) Select one or more VLL volume numbers to which you want to assign a CU number and an LDEV number. b) Select a desired CU number from the Select CU Number pull-down menu.
PRELIMINARY RELEASE Figure 4.7 Install CV Pop-Up Menu Figure 4.8 Install CV Panel (1) Figure 4.
PRELIMINARY RELEASE Figure 4.10 Install CV Panel (2) Figure 4.
PRELIMINARY RELEASE Figure 4.
PRELIMINARY RELEASE 4.2.3 Deleting a VLL volume To delete an individual Virtual LVI/LUN volume within an LDEV or parity group, use the volume to space operation (refer to section 4.2.1). To convert a Virtual LVI/LUN volume to a normal volume, you must initialize the volume (see section 4.2.4). 4.2.4 Initializing a Virtual LVI/LUN Volume WARNING: The Volume Initialize function is a destructive operation. The data on the Virtual LVI/LUN volume being converted will be lost when the operation is complete.
PRELIMINARY RELEASE To initialize a VLL volume: 1. Change to Modify mode (refer to section 2.3 if you need instructions). Select the LUN Expansion (LUSE)/Virtual LVI/LUN (VLL) button ( ) to open the LUSE/VLL panel. The LUSE tab is the default view (refer to Figure 3.1). Select the VLL tab (refer to Figure 4.1) 2. On the Parity Group – LDEV Outline (on the upper left corner of the panel; refer to Figure 4.2), select the LDEV folder to open a list of Control Units.
PRELIMINARY RELEASE 9. You will be returned to the VLL tab. The change is not yet implemented in the subsystem, but the following changes will appear in the VLL tab: a) The figures in the Capacity column will not yet be updated. b) The color of the CU icon that you manipulated in the Parity Group - LDEV outline view changes from red to yellow.
PRELIMINARY RELEASE Figure 4.14 Volume Initialize Panel Figure 4.
PRELIMINARY RELEASE Figure 4.16 Set SSID Panel (Volume Initialize) Figure 4.
PRELIMINARY RELEASE Chapter 5 5.1 Troubleshooting Troubleshooting For troubleshooting information on the 9900V subsystem, please refer to the Hitachi Freedom Storage™ Lightning 9900™ V Series User and Reference Guide (MK-92RD100). For information on the 9900V Remote Console software error codes, please refer to the Hitachi Freedom Storage™ Lightning 9900™ V Series Hitachi Remote Console – Storage Navigator Error Codes (MK-92RD132).
PRELIMINARY RELEASE Table 5.1 General Error Conditions Error Condition Probable Cause / Recommended Action The Remote Console experiences an error. Save the Java™ log file on the Remote Console, and report to the Hitachi Data Systems Technical Support Center. For Windows® 2000, the Java™ log file is in the following place: c:\Documents and Settings\login user ID\plugin131.trace Restart the Remote Console. Only the Exit and Refresh buttons are effective when accessing the SVP from the Remote Console.
PRELIMINARY RELEASE 5.2 Calling the Hitachi Data Systems Technical Support Center If you need to call the Hitachi Data Systems Technical Support Center, be sure to provide as much information about the problem as possible.
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PRELIMINARY RELEASE Glossary, Acronyms, and Abbreviations Command Control Interface (CCI) CruiseControl CU Custom Access DASD DKC System administrators can enter Command Control Interface (CCI) commands from open-system hosts to perform Hitachi TrueCopy and ShadowImage operations on logical devices. CruiseControl performs automatic relocation of volumes to optimize performance. Control Unit. The 9900V subsystem supports a maximum of 16 logical control unit (CU) images, numbered sequentially from 0 to F.
PRELIMINARY RELEASE kB kilobyte(s) LAN LBA LDEV LVI local-area network logical block address logical device. An LDEV used by mainframe hosts can be called a device, logical volume image (LVI) or a volume. An LDEV used by open-system hosts is called a logical unit (LU). An LDEV used by open-system hosts is called a logical unit (LU). Opensystem fibre interfaces access LUs that are mapped to one or more LDEVs. logical unit number is an identifying number for an LU.
PRELIMINARY RELEASE copy operations between 9900V subsystems in different locations for data backup and disaster recovery purposes. UCB unit control block User account list The user account list includes user information such as user ID, password, and write permission for each 9900V option. VLL Virtual LVI/ LUN is an option that enables you to configure custom-size logical device images and logical units, which are smaller than standardsize devices.
PRELIMINARY RELEASE 52 Glossary, Acronyms and Abbreviations
