Software User Manual
Table Of Contents
- HP StorageWorks External Storage XP user guide
- Contents
- About this guide
- 1 Overview of connecting external arrays
- 2 Preparing for External Storage XP operations
- System requirements
- External Storage XP requirements
- Installing External Storage XP
- Preparing for External Storage XP settings
- Powering arrays on or off
- Using mapped external LUs from the host connected to the local array
- Uninstalling External Storage XP
- Limitations on External Storage XP operations
- Figure 11 Example of external LU with 2 TB or less
- Figure 12 External LU capacity is larger than the specified emulation type’s basic capacity (OPEN-3 example)
- Figure 13 External LU capacity is smaller than the specified emulation type’s basic capacity
- Table 4 When external LU’s emulation type is OPEN
- Table 5 When external LU’s emulation type is for mainframes
- Combining External Storage XP with other HP StorageWorks products
- 3 Managing cache with external storage
- Guidelines for using cache with external storage
- Determining, setting, or changing the external LU cache mode
- Partitioning cache for external storage
- Determining the number and size of needed partitions
- Creating Cache partitions
- Changing storage system modes
- 4 External Storage XP panes
- 5 Configuring external LUs
- Overview of configuring external LUs
- Setting an external array’s port
- Setting a local array’s port attributes
- Mapping external LUs (Add LU)
- Setting alternate paths for external LUs
- Adding alternate paths by selecting multiple external LUs (Add Paths)
- Deleting alternate paths by selecting multiple external LUs (Delete Paths)
- Checking an external LU’s status (LDEV Information)
- Disconnecting external arrays or LUs
- Checking the connection status and resuming external LU operations (Check Paths & Restore Vol.)
- Restoring external LUs (LDEV Restore)
- Stopping the use of paths to an external LU by specifying an external array’s WWN (Disconnect Paths)
- Restoring paths to an external LU by specifying an external array’s WWN (Check Paths)
- Changing an external array’s port setting
- Stopping the use of paths to an external LU by specifying a local array’s port (Disconnect Paths)
- Restoring paths to an external LU by specifying a local array’s port (Check Paths)
- Deleting external LU mappings (Delete LU)
- 6 Troubleshooting NAS Blade systems that include external arrays
- 7 Remote command devices
- 8 Troubleshooting External Storage XP
- A Notes on connecting external arrays
- Connecting Thunder 9500V subsystems
- System parameters for connecting Thunder 9500V subsystems
- Relationship between serial numbers in the Device list on the LU Operation pane and Thunder 9500V subsystem models
- Relationship between the WWN of the port on the Thunder 9500V subsystem and the controller
- Path status and examples of recovery procedures (Thunder 9500V subsystems)
- Connecting TagmaStore AMS and TagmaStore WMS subsystems
- System parameters for connecting TagmaStore AMS and TagmaStore WMS subsystems
- Relationship between serial numbers in the Device list on the LU Operation pane and TagmaStore AMS and TagmaStore WMS subsystem models
- Relationship between the WWN of the port on the TagmaStore AMS or TagmaStore WMS subsystem and the controller
- Path status and examples of recovery procedures (TagmaStore AMS and TagmaStore WMS subsystems)
- Connecting XP12000/XP10000 Disk Arrays
- Connecting XP1024/XP128 Disk Arrays
- Connecting XP512/XP48 Disk Arrays
- Connecting HP 200 Storage Virtualization System as external storage
- Connecting EVA arrays
- Connecting Thunder 9500V subsystems
- B Required volume capacity for emulation types
- C Adjusting volume capacity for copy pair setting
- D Using an XP12000/XP10000/SVS200 with an EVA3000/5000 external storage
- E Configuring MSA1000/1500 as external arrays
- Index
82 Configuring external LUs
When the external LU to be mapped has the VMA setting, IO Suppression mode is automatically set to
Disable.
CAUTION: To use the mapped external LU for products other than Flex Copy XP (such as Cache
LUN XP, Auto LUN XP, Continuous Access XP, Continuous Access XP Journal, and Business Copy
XP), set IO Suppression mode to Disable.
CAUTION: To set I/O Suppression mode to Disable, External Storage XP must be installed.
CAUTION: To set IO Suppression mode to Enable, Flex Copy XP must be installed.
• Cache Mode
Specifies if the write I/O from the host is propagated synchronously or asynchronously to the external
storage device (”External LU attributes set by mapping” on page 20).
To propagate write I/Os from the host to the external array asynchronously, select Enable.
To propagate write I/Os from the host to the external array synchronously, select Disable.
If you set IO Suppression mode to Enable, Cache Mode is automatically set to Disable.
CAUTION: If you set Disable, Cache LUN XP’s bind mode cannot be set.
CAUTION: If you set the mapped LU to a mainframe-system emulation type, the host I/O is always
propagated asynchronously to the external LU, regardless of the Cache Mode setting.
• Start CU:LDEV
First CU:LDEV number in the series of mapped destination internal LDEVs. The default is “- : -”. Interval
also appears. The default is 0.
To have External Storage XP select the first CU:LDEV number for the mapped internal LDEV, leave the
default (“- : -”). External Storage XP searches for an available CU:LDEV number starting with 00:00,
and selects the first one it finds.
To specify the first CU:LDEV number and interval, click Select LDEV. The Select LDEV window
(Figure 49) appears.
• Alternate Path
Number of alternate paths automatically set when mapped. Values can be from 0 to 7. Default is 1.
CAUTION: If the specified number of alternate paths cannot be set, an error appears in the Preset
list.
• CLPR (see ”External LU attributes set by mapping” on page 20)
When cache memory is partitioned using XP Disk/Cache Partition, you can select the CLPR used to
access the mapped LU from the list. The SLPR number that the selected CLPR belongs to appears on the
right of the list. However, when you select a mainframe emulation type in Emulation Type, you can only
select CLPRs belonging to SLPR number 0. The Limited check box appears on the right of the SLPR
number. To display only CUs defined for the selected SLPR, select the Limited check box. To display all
CUs, regardless of the SLPR, clear the check box. By default, the Limited check box is selected.
• Select LDEV button
Displays the Select LDEV window (Figure 49) where you can select the first CU:LDEV number in the
series.