You can share SI volumes with HTI volumes. You can assign shared pairs to CTGs, but not to the same CTG. For the node or leaf volume of a Thin Image pair, see the S-VOL description in the following table.
The following table describes how you can share HTI volumes.
HTI volume |
SI volume |
|
---|---|---|
P-VOL |
S-VOL |
|
P-VOL (RCPY status) |
NO |
NO |
P-VOL (all statuses except RCPY)1 |
YES |
YES2 |
S-VOL |
NO |
NO |
HTI pool volume |
NO |
NO |
Notes:
|
SI pair tasks that you can perform are limited according to the Thin Image pair status. The following topics show the supported SI tasks.
Pair tasks with Thin Image primary volume shared with ShadowImage primary volume
The following table lists the pair tasks that you can perform when you share the SI P-VOL with the Thin Image P-VOL.
SI task (CCI command) |
Thin Image pair status |
|||||
---|---|---|---|---|---|---|
COPY |
PAIR, PFUL |
PSUS, PFUS |
SMPL(PD) |
RCPY |
PSUE |
|
Create a pair (paircreate) |
YES |
YES |
YES |
YES |
NO |
YES |
Create and split a pair (paircreate -split) |
YES |
YES |
YES |
YES |
NO |
YES |
Split a pair (pairsplit) |
YES |
YES |
YES |
YES |
NO |
YES |
Resynchronize a pair (pairresync) |
YES |
YES |
YES |
YES |
NO |
YES |
Reverse Copy a pair (pairresync -restore) |
YES |
YES* |
YES |
YES |
NO |
YES |
Quick Restore a pair (pairresync -restore) |
NO |
NO |
NO |
NO |
NO |
NO |
Suspend a pair task (pairsplit -E) |
YES |
YES |
YES |
YES |
YES |
YES |
Delete a pair (pairsplit -S) |
YES |
YES |
YES |
YES |
YES |
YES |
Notes: *The snapshot data must be consistent with P-VOL data and ready to use in the SI task. After issuing the pairsplit command for a Thin Image pair for which a consistency group is configured, verify that the status of all pairs in the Thin Image consistency group is PSUS or unpaired, and then execute the SI task. If you do not, the Thin Image snapshot data and P-VOL data when the storage system accepted the pairsplit command will not be consistent. For details about Thin Image pair status and operations, see the Hitachi Thin Image User Guide. For more information about ensuring the snapshot data is consistent with P-VOL data, see Ensuring snapshot data is consistent with P-VOL data. |
Pair tasks with Thin Image primary volume shared with ShadowImage secondary volume
The following table lists the pair tasks that are supported when you share the SI S-VOL with the Thin Image P-VOL.
SI task (CCI command) |
Thin Image pair status |
|||||
---|---|---|---|---|---|---|
COPY |
PAIR, PFUL |
PSUS, PFUS |
SMPL(PD) |
RCPY |
PSUE |
|
Create a pair (paircreate) |
NO |
NO |
NO |
NO |
NO |
NO |
Create and split a pair (paircreate -split) |
NO |
NO |
NO |
NO |
NO |
NO |
Split a pair (pairsplit) |
YES |
YES1 |
YES |
YES |
NO |
YES |
Resynchronize a pair (pairresync) |
YES |
YES1 |
YES |
YES |
NO |
YES |
Reverse Copy a pair (pairresync -restore) |
YES |
YES1 |
YES |
YES |
NO |
YES |
Quick Restore a pair2 (pairresync -restore) |
NO |
NO |
NO |
NO |
NO |
NO |
Suspend a pair task (pairsplit -E) |
YES |
YES |
YES |
YES |
NO |
YES |
Delete a pair (pairsplit -S) |
YES |
YES |
YES |
YES |
YES |
YES |
Notes:
|