To create Thin Image pairs, the following volumes are required.
| Volume type | Volumes that can be used | Description |
|---|---|---|
| Primary |
|
P-VOL in a Thin Image pair that does not use a DRS-VOL. |
| Secondary | Thin Image V-VOL (V-VOL of which provisioning type is Snapshot in HDvM - SN, or V-VOL created by raidcom add ldev -pool snap in CCI) |
Use this volume to create snapshot pairs. Cannot be used for cascaded or cloned pairs. This volume is required to create a pair with the S-VOL specified. |
| DP-VOL |
Use this volume to create cascaded or cloned pairs. This volume is required to create a pair with the S-VOL specified. Cloned pairs must be created with the S-VOL specified. When a DP-VOL is used as an S-VOL, you must specify a cascaded or cloned pair. |
|
| Pool | Logical volume (LDEV) | Volumes that configure a pool which stores snapshot data. Differential data of a P-VOL is stored in a pool volume as snapshot data. |