HP StorageWorks External Storage XP user guide (T1706-96006, June 2006)
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
50 Managing cache with external storage
Determining the number and size of needed partitions
The minimum cache partition (CLPR) size is 4 GB. Determine the size you need for each CLPR being used
for external storage based on the total capacity of the assigned external volumes. Table 6 shows the
recommended cache sizes for external storage CLPRs on open systems. Table 7 shows the same
information for HP storage virtualization systems.
Creating Cache partitions
Ensure the XP Disk/Cache Partition license is installed, you have Administrator authority on the array, and
you are in Modify mode in XP Remote Web Console. For more information about license keys and user
administration procedures, see the HP StorageWorks XP Remote Web Console user guide for
XP12000/XP10000/SVS200.
1. In XP Remote Web Console, click the Install button in the left pane.
2. Click the Partition Definition tab.
3. In the Cache Logical Partition tree, right-click SLPR0 (if you have additional storage partitions
configured, click the storage partition you want the CLPR to be created in), and select Create CLPR. The
new CLPR is added to the tree.
Table 6 Recommended individual CLPR cache size for external storage on open systems
External storage volume capacity assigned to CLPR Recommended cache size for CLPR
Less than 128,000 GB 4 GB
128,000 GB or more 8 GB
Table 7 Recommended individual CLPR cache size for external storage on HP storage virtualization
systems
External volume capacity assigned to CLPR CLPR0 Additional CLPRs
Less than 1 TB 4 GB 4 GB
1 TB <= capacity < 16TB 8 GB 4 GB
16 TB <= capacity < 20 TB 12 GB 4 GB
20 TB <= capacity < 128 TB 16 GB 4 GB
128 TB or more 24 GB 8 GB