Select Source Snapshot Copy dialog box
You use the Select Source Snapshot Copy dialog box to select a specific Snapshot copy to transfer data between protection relationships, or you select the default behavior, which varies depending on whether you are initializing, updating, or resynchronizing a relationship, and whether the relationship is a SnapMirror or SnapVault.
Default
Enables you to select the default behavior for determining which Snapshot copy is used for initialize, update, and resynchronize transfers for SnapVault and SnapMirror relationships.
If you are performing a SnapVault transfer, the default behavior for each operation is as follows:
| Operation | Default SnapVault behavior when source is read/write | Default SnapVault behavior when source is Data Protection (DP) |
|---|---|---|
| Initialize | Creates a new Snapshot copy and transfers it. | Transfers the last exported Snapshot copy. |
| Update | Transfers only labeled Snapshot copies, as specified in the policy. | Transfers the last exported Snapshot copy. |
| Resynchronize | Transfers all labeled Snapshot copies created after the newest common Snapshot copy. | Transfers the newest labeled Snapshot copy. |
If you are performing a SnapMirror transfer, the default behavior for each operation is as follows:
| Operation | Default SnapMirror behavior | Default SnapMirror behavior when relationship is second hop in a SnapMirror to SnapMirror cascade |
|---|---|---|
| Initialize | Creates a new Snapshot copy and transfers it and all Snapshot copies created prior to the new Snapshot copy. | Transfers all Snapshot copies from the source. |
| Update | Creates a new Snapshot copy and transfers it and all Snapshot copies created prior to the new Snapshot copy. | Transfers all Snapshot copies. |
| Resynchronize | Creates a new Snapshot copy and then transfers all Snapshot copies from the source. | Transfers all Snapshot copies from the secondary volume to the tertiary volume, and deletes any data added after creation of the newest common Snapshot copy. |
Existing Snapshot Copy
Enables you to select an existing Snapshot copy from the list if Snapshot copy selection is allowed for that operation.
- Snapshot Copy
- Displays the existing Snapshot copies from which you can select for a transfer.
- Date Created
- Displays the date and time the Snapshot copy was created. Snapshot copies are listed from most recent to least recent, with the most recent at the top of the list.
If you are performing a SnapVault transfer and you want to select an existing Snapshot copy to transfer from a source to a destination, the behavior for each operation is as follows:
| Operation | SnapVault behavior when specifying a Snapshot copy | SnapVault behavior when specifying a Snapshot copy in a cascade |
|---|---|---|
| Initialize | Transfers the specified Snapshot copy. | Source Snapshot copy selection is not supported for data protection volumes. |
| Update | Transfers the specified Snapshot copy. | Source Snapshot copy selection is not supported for data protection volumes. |
| Resynchronize | Transfers the selected Snapshot copy. | Source Snapshot copy selection is not supported for data protection volumes. |
If you are performing a SnapMirror transfer and you want to select an existing Snapshot copy to transfer from a source to a destination, the behavior for each operation is as follows:
| Operation | SnapMirror behavior when specifying a Snapshot copy | SnapMirror behavior when specifying a Snapshot copy in a cascade |
|---|---|---|
| Initialize | Transfers all Snapshot copies on the source, up to the specified Snapshot copy. | Source Snapshot copy selection is not supported for data protection volumes. |
| Update | Transfers all Snapshot copies on the source, up to the specified Snapshot copy. | Source Snapshot copy selection is not supported for data protection volumes. |
| Resynchronize | Transfers all Snapshot copies from the source, up to the selected Snapshot copy, and then deletes any data added after creation of the newest common Snapshot copy. | Source Snapshot copy selection is not supported for data protection volumes. |
Command buttons
The command buttons enable you to perform the following tasks:
- Submit
- Submits your selections and closes the Select Source Snapshot Copy dialog box.
- Cancel
- Discards your selections and closes the Select Source Snapshot Copy dialog box.
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