HP XP P9500 Storage - Manual (Page 28)

Operations for BC pairs directly related to the delta resync pair—and Cnt Ac-J status
requirements—are the same whether you perform the BC operation at the intermediate site with
the delta resync P-VOL, or at the remote site with the delta resync S-VOL.
The following table shows the supported operations for status combinations.
Table 7 BC operations — P-VOL shared with intermediate Cnt Ac-J S-VOL/delta resync P-VOL
BC operations Cnt Ac-J C
2
pair
status
Cnt Ac-J A or B
1
,
pair status
Resync --Reverse Copy,
Quick Restore Create, Split, Suspend, Delete,
Resync--Normal Copy, Quick Resync
NO YES HOLD or HLDE PAIR, COPY, or
PSUS/SSWS
1. Local-intermediate pair, or local-remote pair
2. Delta resync pair
Sharing volumes in a 3-Cnt Ac-J DC cascade configuration
Business Copy volumes can be shared with Continuous Access Journal volumes in 3 DC cascade
configurations. The BC primary and secondary volumes can be shared with Cnt Ac-J volumes, as
shown in the following figure.
Figure 7 BC volumes in a 3-Cnt Ac-J DC cascade configuration
When associated with these configurations, BC pair operations are dependent on the pair status
of the Continuous Access Journal local-intermediate pair and the local-remote pair. The following
tables show the operations that can be performed.
Table 8 BC operations — P-VOL shared with Cnt Ac-J P-VOL at local site
BC operations Cnt Ac-J
local-intermed. pair
status
Resync --Reverse Copy, Quick Restore Create, Split, Suspend, Delete,
Resync--Normal Copy, Quick Resync
NO YES PAIR or COPY
YES YES PSUS/SSWS
Table 9 BC operations — S-VOL shared with Cnt Ac-J P-VOL at local site
BC operations Cnt Ac-J
local-intermed. pair
status
Resync Suspend, Delete Pair split Pair create
Quick Restore Normal Copy, Quick Resync,
Reverse Copy
NO NO YES NO NO PAIR
NO NO YES NO NO COPY
YES YES YES YES NO PSUS/SSWS
28 Sharing Business Copy volumes