Sharing Thin Image Volumes That Have Data Retention Utility Access Attributes - Hitachi VSP G1000 User Manual

Sharing Thin Image volumes that have Data Retention Utility access
attributes
You can create Thin Image (HTI) pairs using volumes on which you set Data
Retention Utility access attributes. In addition, you can set any access
attribute for virtual volumes of HTI.
Depending on access attributes of the P-VOL, S-VOL, or pool volume, you
cannot perform some pair tasks and pool tasks with Thin Image. The Thin
Image pair tasks you can perform are different depending on whether you
assign Data Retention Utility access attributes using CCI or HDvM - SN. The
tables below explain whether you can perform Thin Image pair tasks and pool
tasks on volumes that have access attributes assigned by Data Retention
Utility. If you release assignment of snapshot data after assigning access
attributes to a Thin Image S-VOL, the Thin Image tasks you can perform are
the same as those that can be performed when the Read/Write attribute is
assigned to the S-VOL.
Also, you can assign access attributes to Thin Image P-VOL and S-VOLs. The
tables below also explain Thin Image pair tasks and pool tasks after access
attributes are assigned.
Access attributes and supported Thin Image pair tasks
The following table lists the relationship between P-VOL and S-VOL access
attributes and Thin Image pair tasks when using HDvM - SN to assign Data
Retention Utility access attributes.
Read/Write
Read Only, Protect, S-
VOL Disable
The following table lists the relationship between P-VOL and S-VOL access
attributes and Thin Image pair tasks when using CCI to assign Data
Retention Utility access attributes.
44
Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series
Volume access attributes specified for the HTI pair
P-VOL
1. Reverse Copy does not copy S-VOL access attributes to P-VOLs (see
methods on page 143).
Overview of Thin Image
S-VOL
Read/Write
Read Only, Protect, S-VOL
Disable
Read/Write
Read Only, Protect, S-VOL
Disable
HTI pair task
Create, split,
Resync
suspend,
(Reverse
Resync pair
Copy)
(Normal Copy)
Yes
No
Yes No
No
Pair resynchronization
Delete
1
Yes