HP XP External Storage Software - Manual (Page 34)

• Do not combine LDEVs of multiple external volumes to create a LUSE volume. Only the LDEVs in
the same external volume can be used to configure the LUSE volumes.
• The external volumes, for which the different Cache Mode is set, cannot be combined to form
a LUSE volume.
HP StorageWorks XP Virtual LVI/LUN (VLL)
Consider the following for Virtual LVI/LUN (VLL):
• If you set the emulation type for the mainframe system as you map the external volume, you need
to format the mapped volume or perform the Write to Control Blocks operation using the VLL
function before you use the external volume.
For the formatting operation procedure and the Write to Control Blocks operation procedure, see
the HP StorageWorks XP24000 Virtual LVI/LUN (VLL) and Volume Shredder User’s Guide.
• If you create LDEVs in an external volume using the VLL function, the cache mode of the created
LDEVs become the same as those of the source external volume.
Cache Residency Manager
Consider the following for Cache Residency Manager:
• The bind mode of the Cache Residency Manager operation cannot be specified for the external
volume if the Cache Mode is set to Disable.
• If you use the mapped external volume for the Cache Residency Manager operation and set
the bind mode, a cache of twice as much capacity as the user data is required for the Cache
Residency Manager operation.
HP StorageWorks XP Performance Monitor and HP StorageWorks XP Auto
LUN Software
Consider the following for Performance Monitor and Auto LUN:
• Performance Monitor can be used to display the monitoring information about the external
volumes.
• Mapped volumes can be used for Auto LUN. For adjusting volume capacity, see
“ Adjusting Volume Capacities for Pairs ” on page 133.
For the configuration example of Auto LUN, see “ Auto LUN Operations ” on page 35.
HP StorageWorks XP Continuous Access Software
Mapped volumes can be used for Continuous Access. For adjusting volume capacity, see
“ Adjusting Volume Capacities for Pairs ” on page 133.
For the configuration example of Continuous Access, see “ Continuous Access Operations ” on page 36.
TrueCopy for Mainframe
Mapped volumes can be used for TrueCopy for Mainframe. For adjusting volume capacity, see
“ Adjusting Volume Capacities for Pairs ” on page 133.
HP StorageWorks XP Continuous Access Journal Software
Mapped volumes can be used for Continuous Access Journal. For adjusting volume capacity, see
“ Adjusting Volume Capacities for Pairs ” on page 133.
For the configuration example of Continuous Access Journal, see
“ Continuous Access Journal Operations ” on page 37.
34 About External Storage Operations