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Table 17 VMA setting and availability of Paircreate operation
S-VOL
P-VOL
Volume without VMA Volume with VMA
Volume without
VMA
OK
NO
Volume with VMA
NO
OK
NOTE:
You can specify a volume with VMA as a reserve volume.
Figure 24 shows the process of copying of access attribute when you create a pair using volumes with
VMA.
NOTE:
When you use volumes with VMA to create a BC pair, both the P-VOL and S-VOL must have VMA.
Figure 24 Copying access attribute
In Figure 24, if both the P-VOL and S-VOL have VMA, the P-VOL's VMA is copied to the S-VOL. In
Figure 24, the S-VOL's access attribute is Read/Write when the pair status is SMPL. After the P-VOL's
VMAiscopiedtotheS-VOL,theS-VOL'saccessattributeisReadOnly,whichissameastheP-VOL's
access attribute. When the pair status is PAIR, copied access attribute information is not effective, so the
S-VOL's access attribute is still Read/Write. To make the copied access attribute information effective,
split the pair and make the pair status PSUS. When the pair status is PSUS, the S-VOL's access attribute
changes to Read Only. For more information about pair status and operations related to the access
attribute, see Table 18.
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Business Copy XP (BC) for the Array