Snapshot With Cache Partition Manager - Hitachi AMS2100 User Manual

SnapShot with Cache Partition Manager

D-2
Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide
SnapShot uses a part of the cache area to manage internal
resources. Because of this, cache capacity for Cache Partition
Manager decreases.
In this case, make sure that cache partition information is initialized,
which results in the following efficiencies:
• Logical units are moved to the master partitions on the side of
the default owner controller.
• Sub-partitions are deleted and the size of the each master
partition is reduced to half of the user data area after the
installing SnapShot.
Figure D-1 shows partitions before SnapShot is installed;
shows them with SnapShot.
•
Figure D-1: Cache Partitions with Cache Partition Manager
Using SnapShot with Cache Partition Manager
Figure D-2