Dynamic Provisioning / Dynamic Tiering; Shadowimage - Hitachi G1000 User Manual

Volume type
Notes:
1 If you set the S-VOL Disable attribute of Data Retention Utility to the GAD S-VOL,
.
GAD pair operations using CCI are restricted. Release the S-VOL Disable attribute on
the GAD S-VOL, and then perform the GAD pair operations.
2 Quorum disks can be set only on external volumes that have been configured so
.
that one external volume group is mapped to one external volume.
3 You cannot encrypt a nonencrypted quorum disk in the external storage system
.
from the VSP G1000 at the primary or secondary site.
Related topics
• Dynamic Provisioning / Dynamic Tiering on page 2-6
• Use cases for pairing GAD volumes with SI or HTI on page 2-17
• ShadowImage on page 2-6
• Thin Image on page 2-12
• Data Retention Utility on page 2-17
• LUN Manager on page 2-19
• Virtual Partition Manager on page 2-19
• Volume Shredder on page 2-19
• Performance Monitor on page 2-19

Dynamic Provisioning / Dynamic Tiering

Dynamic Provisioning and Dynamic Tiering virtual volumes (DP-VOLs) can be
used as GAD pair volumes.
Note:
• Only allocated page capacity is counted as GAD license capacity. Page
capacity or license capacity counted toward the P-VOL and for the S-VOL
might differ, because page capacity for the volumes changes according to
the operation, for example, tier relocation or reclaiming zero pages.
• You cannot add capacity to a DP-VOL that is used as a GAD pair volume.
To do so, delete the pair, add the capacity to the DP-VOL, then recreate
the pair.
Related topics
• Volume types that can be used for GAD on page 2-4

ShadowImage

You can use the GAD P-VOL and S-VOL as a ShadowImage P-VOL.
2-6
Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide
Used as GAD P- Used as GAD S-
VOL?
System requirements
Used as quorum
VOL? disk?
system as a quorum
3
disk.