Combining External Storage Xp With Other Hp Storageworks Products - HP StorageWorks XP12000 User Manual

• For all external storage, either set the ES XP cache mode option in Command View XP or XP Remote
Web Console to cache disabled or partition resources associated with external storage in its own CLPR
(for example, CLPR1). While HP strongly recommends this new default for all external storage in
general, this new default is mandatory for any external array that is slower than an XP12000 external
port (for example, the Modular Smart Array product line) unless it resides in its own CLPR partition with
isolated port/MP/cache resources.

Combining External Storage XP with other HP StorageWorks products

You can use HP StorageWorks software products to operate and manage the external LUs you set using
External Storage XP.
The following sections provide configuration examples for specific HP StorageWorks software products:
• "Using external LUs for Auto LUN XP
• "Using external LUs for Continuous Access XP
• "Using external LUs for Continuous Access XP Journal
• "Using external LUs for Business Copy XP
The following HP StorageWorks software products support the use of mapped external LUs. For
operations and notes about each software product, see the product's user guide.
• LUN Manager
• If you set an open-system emulation type when mapping the external LU, you must use LUN
Manager to set the mapped LU's path.
• Volume Manager
• If you set a mainframe-system emulation type when mapping the external LU, you must format the
mapped volume or perform the Write to Control Blocks operation using the Custom Volume Size
(CVS) function before putting the external LU into use. For instructions, see the HP StorageWorks
LUN Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200.
• If you use the CVS function to create LDEVs from an external XP LU, the created LDEVs' attributes (IO
Suppression mode and Cache Mode) are the same as the source external LU'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 Cache
LUN XP operation requires a cache that is twice the size of the user data.
• 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
Continuous Access XP
• 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
LUs for Continuous Access XP Journal
• Universal Replicator for z/OS
operations" on page 38
operations" on page 39
operations" on page 41
operations" on page 39.
operations" on page 40.
operations" on page 40
"Using external LUs for
External Storage XP user guide
"Using external
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