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• Continuous Access XP Journal. Continuous Access XP Journal volumes can be assigned to BC

pairs, and BC volumes can be assigned to Continuous Access XP Journal pairs.

• Continuous Access XP. Continuous Access XP volumes can be assigned to BC pairs, and BC

volumes can be assigned to Continuous Access XP pairs. See Combining BC and Continuous

Access XP operations for important information on BC and Continuous Access XP shared volume

configurations.

• Auto LUN. BC can be assigned to Auto LUN migration volumes. However, if the BC P-VOL is

already paired with three S-VOLs, delete the BC pairs before migrating the volumes. Also, to assign

BC volumes to destination migration volumes or reserve BC volumes for Auto LUN, delete the BC

volumes or unreserve the BC volumes before using them with Auto LUN. If you assign a BC P-VOL

that is already paired with three S-VOLs to Auto LUN migration volumes, or assign BC volumes to

Auto LUN volumes other than migration volumes, the command will be rejected.

If you split the BC pair assigned to Auto LUN migration volumes, migration of those volumes will

be canceled.

NOTE:

You cannot use Auto LUN migration, destination, and reserved volumes for BC pair operations

(the command will be rejected). To use Auto LUN volumes for BC pair operations, use Auto LUN

to release the volumes.

• LUN Security XP Extension.

• External Storage XP. BC operations can be performed with External Storage XP operations to

create pairs with the external volumes.

Combining BC and Continuous Access XP operations

BC and Continuous Access XP can function together in the same disk array to provide both internal

and remote backup for important data.

NOTE:

• BC is recommended for intra-disk array copy operations. If BC is not installed, use Continuous

Access XP (synchronous only) to copy within the same local disk array. This Continuous Access

XP configuration requires at least one external ESCON® cable loop (minimum of two is recom-

mended).

• Combining BC L1 and L2 pairs with Continuous Access XP volumes is allowed. Continuous Access

XP considers node and leaf volumes secondary volumes (S-VOLs).

The configuration shown in Figure 15 is an example of a volume functioning as both a Continuous

Access XP P-VOL and BC P-VOL. With this configuration, you can perform the following:

• Use BC to provide on-site backup copies of Continuous Access XP P-VOLs

• Use Continuous Access XP to provide remote backup copies of BC P-VOLs

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Hp XP Business Copy Software Bedienungsanleitung Seite 45