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Combining BC wit
h other data management operations
BC supports con
current operations with the following data management functions:
• LU Size Expansion (LUSE). LUSE volumes can be assigned to BC pairs if the P-VOL and S-VOL
have the same LU type and number of LDEVs (same size). If you must perform LUSE operations on
an existing BC P-VOL or S-VOL, delete the pair first to return the volume to SMPL status.
• CVS. CVS volum
es can be assigned to BC pairs if the S-VOL has the same capacity as the P-VOL.
If you must per
form CVS operations on an existing BC P-VOL or S-VOL, delete the pair first
to return the volume to SMPL status.
• LUN Security. LUN Security operations do not affect BC operations. Volumes under secure
ports and/or
assignedtoWorldWideName(WWN)groupsand/orLUNgroupscanalsobe
assigned to BC pairs. Volumes assigned to BC pairs can also be assigned to secure ports, WWN
groups, and/or LUN groups for LUN Security.
NOTE:
BC S-VOLs cannot be accessed by any host except when the pair is split.
• Cache LUN. Cache LUN volumes can be assigned to BC pairs. Cache LUN operations can be
performed on BC P-VOLs and S-VOLs.
CAUTION:
See Pairresync operations for important information on performing quick restore operations on
Cache LUN volumes.
• 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 Journal operations
Continuous Access XP Journal volumes can be assigned to BC pairs, and BC volumes can be assigned to
Continuous Access XP Journal pairs.
Business Copy XP user guide
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