The following tables list the relationship between pair tasks and status.
The following table lists the Thin Image tasks you can perform when the P-
VOL is shared with a TrueCopy or Universal Replicator P-VOL.
HTI task
TC/UR status
COPY PAIR PSUS PSUE Suspending Deleting
Create pair Yes Yes Yes Yes Yes Yes
Store snapshot data Yes Yes Yes Yes Yes Yes
Restore pair No No Yes Yes No No
Delete snapshot data Yes Yes Yes Yes Yes Yes
Delete pair Yes Yes Yes Yes Yes Yes
Legend:
Yes: You can perform the task.
No: You cannot perform the task (the command is rejected).
The following table lists the Thin Image tasks you can perform when the P-
VOL is shared with a TrueCopy or Universal Replicator S-VOL.
HTI task
TC/UR status
COPY PAIR PSUS PSUE SSWS Suspending Deleting
Create pair Yes Yes Yes Yes Yes Yes Yes
Store snapshot data No Yes Yes Yes Yes Yes Yes
Restore pair* No No No No No No No
Delete snapshot data Yes Yes Yes Yes Yes Yes Yes
Delete pair Yes Yes Yes Yes Yes Yes Yes
*When restoring an HTI pair and you are using the P-VOL as a TC or UR S-VOL, switch tasks to the
remote storage system using the horctakeover command.
Legend:
Yes: You can perform the task.
No: You cannot perform the task (the command is rejected).
The following table lists the TrueCopy/Universal Replicator tasks you can
perform when the Thin Image P-VOL is shared with a TrueCopy or Universal
Replicator P-VOL.
TC/UR task
HTI status
COPY PAIR, PFUL PSUS, PFUS RCPY PSUE
Create pair Yes Yes Yes No Yes
Split pair Yes Yes Yes N/A Yes
Resynchronize pair Yes Yes Yes No Yes
Delete pair Yes Yes Yes Yes Yes
50 Overview of Thin Image
Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series