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
96 Configuring external LUs
NOTE: When you use the Custom Volume Size (CVS) function to make an S-VOL for a Flex Copy
XP copy pair that has the same capacity as the P-VOL, set the S-VOL’s capacity in blocks or
cylinders according to the emulation type.
• LDEV List
The status of external LU mapped as internal LDEV. The following information appears:
• CU:LDEV: CU:LDEV number of the internal LDEV to which the external LU is mapped.
• Path: Number of set paths.
• Emulation Type: External LU’s emulation type set when it was mapped.
• Capacity: External LU’s capacity.
• Status: External LU’s status. Possible values: Normal, Unknown, Blockade, Warning, and Format.
Warning indicates that some alternate paths are blocked. Format indicates the external LU is
currently being formatted.
• View all LUs
Displays information about all external LUs in the LDEV list.
• View all Volumes
When the external LU is part of a LUSE volume, displays all LDEVs that make up the LUSE volume in the
LDEV list. However, LDEVs in other external LUs are not displayed, even though those LDEVs might be
part of the LUSE volume. To check all LDEVs configuring a LUSE volume, use the Volume Detail
command (”Displaying configuration information for external LUs (Volume Detail)” on page 97).
• Previous and Next buttons
If you select multiple external LUs in the Device list in the LU Operation pane, click Previous to change
the LDEV list to the external LU appearing just above the currently displayed LU. Click Next to change
the LDEV list to the external LU appearing just below the currently displayed LU.
• OK button
Closes the LDEV Information window, and returns to the LU Operation pane. Contents specified in the
LDEV Information window appear in blue italics in the Device list, and settings appear in the Preset list.
• Cancel button
Cancels all setting operations, closes the LDEV Information window, and returns to the LU Operation
pane.
Restoring external LUs (Restore)
Use the Restore command to restore the status of external LUs.
When errors occur in all paths between the local array and external array, the local array changes the
status of the external LU to Blockade. In this case, see ”Troubleshooting External Storage XP” on
page 121 and restore the path to the external array according to the troubleshooting instructions. Then
execute the Check Paths & Restore Vol. command to make the external LU in Blockade status usable. If the
external LU’s status remains Blockade, even though you restored the path to the external array and
executed the Check Paths & Restore Vol. command, execute the Restore command from the LDEV
Information window.
NOTE: If paths between the local array and external array are not restored, the external LU cannot be
restored to a usable status, even though you execute the Restore command.
NOTE: If you set a mainframe-system emulation type (such as 3390-3) when you mapped the external LU,
and you restore the mapped LU without formatting the LU or performing the Write to Control Blocks
operation, data in the volume cannot be read correctly.
1. Select the LU Operation tab. The LU Operation pane appears.