Cascade Restrictions Of Truecopy With Shadowimage And Snapshot - Hitachi AMS2100 User Manual

Cascade Restrictions of TrueCopy with ShadowImage and SnapShot

Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide
Figure 1-12: Changing LU Ownership
When the firmware version of the array is 08B0/A or more, SnapShot
can cascade ShadowImage and TrueCopy at the same time. However,
since the performance may deteriorate, start the operation after
advance verification.
• Cascade restrictions of TrueCopy S-VOL with SnapShot V-
Vol.
In the configuration in which the P-VOL of ShadowImage and
the P-VOL of SnapShot are cascaded as shown in
at the same time, in the configuration in which the V-VOL of
SnapShot and the S-VOL of TrueCopy are cascaded, when the
TrueCopy pair status is Paired or Synchronizing, ShadowImage
cannot be restored. Change the TrueCopy pair status to Split, and
then execute it again.
Figure 1-13: Cascade restrictions of TrueCopy S-VOL with
SnapShot overview
SnapShot V-VOL
Figure 1-13
, and
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