HP XP7 Storage - Manual (Page 138)

Figure 20 Shared Cnt Ac-J and BC primary volume
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A Cnt Ac-J secondary volume shared with the BC primary volume is illustrated below. With
this configuration, multiple backup copies of the Cnt Ac-J primary volume can be made on
the secondary system.
CAUTION: When you share a Cnt Ac-J S-VOL with a BC P-VOL as shown in the following
figure, the restore operation to the Cnt Ac-J S-VOL takes time. This is especially the case when
the BC pair is in the PSUS(SP)/PSUS status because of the time needed to copy the BC pair.
Because of the extra time that may be needed, make sure the Cnt Ac-J journal volume is sized
with enough capacity to handle the possible increase in I/O. If journal volume capacity is
insufficient, the pair will suspend because of failure. If necessary, contact HP Support for
assistance.
Figure 21 Shared Cnt Ac-J S-VOL and BC primary volume
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Cnt Ac-J primary and secondary volumes shared with BC primary volumes is illustrated below.
This configuration provides multiple copies of the source volume at the local and remote sites.
138 Configurations with Business Copy