HP XP Racks - Manual (Page 28)

For more information about the methods you can use to split pairs, see “Pair splitting methods”
(page 46) .
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You can use BC cascaded pairs as Cnt Ac-S pairs. Cnt Ac-S does not distinguish between
node and leaf volumes in cascaded pairs. Both are considered S-VOLs.
For more information about cascaded pairs, see “Cascaded pairs” (page 7) .
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If you plan to Quick Restore the BC pair, you must first suspend the Cnt Ac-S pair.
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You can perform a CG pair-split on BC pairs that share volumes with Cnt Ac-S S-VOLs.
For more information about CG pair-split for shared volumes, see “Using consistency group
pair-split with shared volumes” (page 18) .
Related topics
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For more information about sharing BC and Cnt Ac-S volumes, see the HP XP7 Continuous
Access Synchronous User Guide.
Sharing volumes with Continuous Access Journal
You can share BC P-VOLs with Cnt Ac-J P-VOLs and S-VOLs.
•
You can use BC cascaded pairs as Cnt Ac-J pairs. In cascaded pairs, Cnt Ac-J does not
distinguish between node and leaf volumes. Both are considered as S-VOLs.
For more information about cascaded pairs, see “Cascaded pairs” (page 7) .
•
If you plan to Quick Restore the BC pair, do not suspend the Cnt Ac-J pair.
For more information about Quick Restore, see “Reverse resynchronization” (page 53) .
•
You can perform a CG pair-split on BC pairs that share volumes with Cnt Ac-J S-VOLs.
For more information about using CG pair-split on pairs with shared volumes, see “Using
consistency group pair-split with shared volumes” (page 18) .
For more information about sharing BC and Cnt Ac-J volumes, see the related appendix in the HP
XP7 Continuous Access Journal User Guide.
Sharing volumes with External Storage
You can create BC pairs using External Storage external volumes.
For more information about External Storage external volumes, see the HP XP7 External Storage
for Open and Mainframe Systems User Guide.
Sharing volumes with Auto LUN
You can assign the following BC volumes to volumes reserved for Auto LUN:
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L1 P-VOL with up to two S-VOLs.
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L2 P-VOL with an S-VOL.
Assigning BC volumes to volumes reserved for Auto LUN workflow
Use the following workflow to assign BC volumes to volumes reserved for Auto LUN:
28 Sharing Business Copy volumes