Available ShadowImage tasks

The following table lists the SI tasks you can perform when sharing an HTI P-VOL with an SI P-VOL.


SI task	HTI pair status
SI task	COPY	PAIR, PFUL	PSUS, PFUS	SMPL(PD)	RCPY	PSUE
Create pair	Yes	Yes	Yes	Yes	No	Yes
Create and split pair	Yes	Yes	Yes	Yes	No	Yes
Split pair	Yes	Yes	Yes	Yes	No	Yes
Normal Copy	Yes	Yes	Yes	Yes	No	Yes
Reverse Copy	Yes	Yes	Yes	Yes	No	Yes
Quick Restore	No	No	No	No	No	No
Suspend replication	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 SI tasks you can perform when sharing an HTI P-VOL with an SI S-VOL.


SI task	HTI pair status
SI task	COPY	PAIR, PFUL	PSUS, PFUS	SMPL(PD)	RCPY	PSUE
Create pair	No	No	No	No	No	No
Create and split pair	No	No	No	No	No	No
Split pair	Yes	Yes	Yes	Yes	No	Yes
Normal Copy	Yes	Yes	Yes	Yes	No	Yes
Reverse Copy	Yes	Yes	Yes	Yes	No	Yes
Quick Restore	No	No	No	No	No	No
Suspend replication	Yes	Yes	Yes	Yes	No	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)

You can perform SI pair tasks after you store snapshot data, but the consistency of the stored snapshot data is not guaranteed.

HTI S-VOLs use the data in the P-VOL. You cannot Quick Restore in SI.

For more information about SI tasks and pair statuses, see the Hitachi ShadowImage® User Guide.

HTI uses MU numbers 0 to 1,023. SI uses MU numbers 0 to 2. HTI cannot use the MU numbers 0 to 2 if you want to share HTI volumes with SI.

To share HTI volumes with SI:

(If HTI is using the MU numbers 0 to 2) Delete the HTI pair of the MU number 0 to 2.