HP StorageWorks External Storage XP user guide for the XP12000, XP10000, SVS200 (T1706-96009, October 2007)
• If you use the CVS function to create LDEVs from an external XP LU, the created LDEVs'
attributes (IO Suppression mode and Cache Mode)arethesameasthesourceexternalLU's.
• You cannot combine the local array internal LDEV and external LU to form a LUSE volume.
• Do not combine LDEVs of multiple external LUs to create a LUSE volume. You can only use
LDEVs in the same external LU to set LUSE volumes.
• You cannot combine external LUs that have different IO Suppression modes to form a LUSE
volume.
• You cannot combine external LUs that have different Cache Mode settings to form a LUSE
volume.
• Cache LUN XP
• You must set the IO Suppression mode to Disable to use the mapped external LU for Cache
LUN XP operations.
• You cannot specify Cache LUN XP's bind mode for an external LU that has Cache Mode
set to Disable.
• If you use the mapped external LU for a Cache LUN XP operation and set the bind mode, the
CacheLUNXPoperationrequiresacachethatistwicethesizeoftheuserdata.
• Continuous Access XP (Synchronous and Asynchronous)
You must set the IO Suppression mode to Disable to use the mapped external LU for Continuous
Access XP operations. For a Continuous Access XP configuration example, see Using external LUs
for Continuous Access XP operations.
• TrueCopy for z/OS
You must set the IO Suppression mode to Disable to use the mapped external LU for TrueCopy for
z/OS operations.
• Continuous Access XP Journal
You must set the IO Suppression mode to Disable to use the mapped external LU for Continuous
Access XP Journal operations. For a Continuous Access XP Journal configuration example, see Using
external LUs for Continuous Access XP Journal operations.
• Universal Replicator for z/OS
You must set the IO Suppression mode to Disable to use the mapped external LU for Universal
Replicator for z/OS operation.
• Business Copy XP
You must set the IO Suppression mode to Disable to use the mapped external LU for Business Copy
XP operations. For a Business Copy XP configuration example, see Using external LUs for Business
Copy XP operations.
• ShadowImage for z/OS
You must set the IO Suppression mode to Disable to use the mapped external LU for ShadowImage
for z/OS operations.
• Snapshot XP
You must set the IO Suppression mode to Disable
to use the mapped external LU for Snapshot XP
operations. For a Snapshot XP configuration example, see Using external LUs for Snapshot XP
operations.
• Compatible PAV for IBM z/OS
You must set the IO Suppression mode to Disable to use the mapped external LU for Compatible
PAV for IBM z/OS operations.
• Volume Security
You must set the IO Suppression mode to Disable to use the mapped external LU for Volume Security
operations.
• Volume Retention Manager
External Storage XP user guide
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