Configuring storage for snapshot transfer
The DS-Client must be configured to connect to each storage that will be used for snapshot transfer. This section assumes the storage device(s) are running and can be accessed by the DS-Client.
1. Snapshot Manager > Register Storage.
The Register Storage Management screen appears.
2. To add a new storage, click New. To edit an existing Registered Storage, select it and click Edit.
If you have just clicked New, the New Storage screen appears.
If you have just clicked Edit, the Modify Storage screen appears.
3. Configure the Storage connection information and click OK.
DS-Client will immediately verify that it can communicate. If successful, the Storage is added to the list.
Configuring snapshot retention policies for snapshot transfer
[Optional, but recommended]
You should configure the list of Retention Policies this DS-Client can apply to the snapshots taken by the Snapshot Manager. Each snapshot transfer that is configured can be assigned to one Retention Policy.
1. Click Snapshot Manager > Snapshot Retention.
The Snapshot Retention Management screen appears.
2. To add a new Retention Policy, click New. To edit an existing Retention Policy, select it and click Edit.
If you have just clicked New, the New Snapshot Retention screen appears.
If you have just clicked Edit, the Modify Snapshot Retention screen appears.
3. Configure the Retention Policy.
4. Click OK to save the Snapshot Retention Policy.
A Retention Policy is applied at volume-level, meaning that all snapshot transfers for the same volume will have the same Retention Policy
IMPORTANT: Once retention is enforced, deleted snapshots cannot be restored.
Configuring snapshot schedules for snapshot transfer
[Optional, but recommended]
Configure the list of Schedules this DS-Client can use for snapshot transfer. Each snapshot transfer that is configured can be assigned to one Snapshot Schedule.
1. Click Snapshot Manager > Snapshot Schedule.
The Snapshot Schedule Management screen appears.
2. To add a new Snapshot Schedule, click New. To edit an existing Snapshot Schedule, select it and click Edit.
If you have just clicked New, the New Snapshot Schedule screen appears.
If you have just clicked Edit, the Modify Snapshot Schedule screen appears.
3. Configure the Snapshot Schedule.
4. Click OK to save the Snapshot Schedule.
A schedule is applied at volume-level, which means that all snapshot transfers for the same volume will have the same schedule.
Configuring a snapshot transfer to be managed by DS-Client
NOTE: At the end of the Snapshot Transfer Setup Wizard, the initial data transfer is run from source to destination. After the data is transferred, a snapshot is created. Each subsequent transfer that is run will do two things: 1) Any missing data (the differential) will be transferred from the source to the destination in order for both to have the same data. 2) After the data transfer is complete, a snapshot is created to record the state of the data at that point in time.
DS-Client must be configured to connect to each Storage that will be used for snapshot transfer. The following steps assume that the Storage device(s) are running and can be accessed by DS-Client.
1. Click Snapshot Manager > Snapshot Transfer.
The Snapshot Transfer Manager screen appears.
2. To add a new Snapshot Transfer configuration, click Snapshot Transfer Setup.
The Select Source Storage screen appears.
3. Select the source Storage, from which the volume data will be read, and click Next.
The Select Volume/qtree screen appears.
4. Select the volume/qtree on the source Storage that will be protected, and click Next.
NOTE: Although all existing volume/qtrees appear in this list, you cannot select a replicated qtree or volume containing a replicated qtree as the source.
The Select Destination Storage screen appears.
5. Select the destination Storage, where the data will be copied, and click Next.
The Select Volume screen appears.
6. Select the volume on the destination Storage where the data will be copied, and click Next.
The Select Snapshot Retention screen appears.
NOTE: If you create a new snapshot transfer on a destination volume where a Retention Policy is already defined, the Select Snapshot Retention screen will not appear. This screen appears only for the first snapshot transfer created on a destination volume.
7. (Optional) Select a Snapshot Retention Policy for the destination volume, and click Next.
The Select Snapshot Schedule screen appears.
8. (Optional) Select a Snapshot Schedule for the destination volume, and click Next.
NOTE: If you create a new snapshot transfer on a destination volume where a Retention Policy is already defined, this screen will not appear. This screen appears only for the first snapshot transfer created on a destination volume.
The Specify Snapshot Transfer Setup Name screen appears.
9. Assign this Snapshot Transfer configuration a name and (optionally) a Bandwidth Throttle and a Description.
10. Click Finish.
The initial transfer from source to destination is triggered immediately after the snapshot transfer is created.
Managing snapshot transfers
The Snapshot Transfer configuration appears as a tree item in the Snapshot Transfer Manager.
You can select the items and right-click at different levels to access the item-options.
Restoring snapshot transfers
With the Restore Snapshot Transfer feature you can restore a specific snapshot from an existing Snapshot Transfer configuration to a new volume (either on the same or a different Storage Device).
1. Click Snapshot Manager > Snapshot Transfer.
The Snapshot Transfer Manager screen appears.
2. Browse and select the required snapshot transfer. Right-click and select Restore.
The list of snapshots for the selected snapshot transfer appears.
3. Select the snapshot you want to restore and click Next.
4. Select the destination storage where you want to restore this snapshot and click Next.
The Storage must already be defined (Snapshot Manager > Register Storage).
5. Select the volume on the destination storage that you want to use and click Next.
6. Select the destination “qtree” name. You can also type a new “qtree” name if you want to create it.
The drop-down list shows the available “qtrees” in the destination volume that can be used for restore.
7. Optionally, you can specify a throttle to limit the bandwidth usage on the Storage Device(s).
8. Click Finish.
The restore starts immediately.
Deactivating a snapshot transfer
Deactivating a snapshot transfer will stop any new incremental data transfers for the selected snapshot transfer. This will break the source mapping from the destination that appears in the Snapshot Transfer Manager list.
1. Snapshot Manager > Snapshot Transfer.
The Snapshot Transfer Manager screen appears.
2. Select the required snapshot transfer, right-click and select Deactivate.
A confirmation screen appears.
3. Click Yes to confirm.
Once deactivated, no new incremental data transfers will occur for this snapshot transfer until it is reactivated.
You can perform restores from a deactivated snapshot transfer. All snapshots in the destination remain, even when deactivated.
Re-activating a snapshot transfer
This option to re-activate a snapshot transfer, along with the Restore feature (see
“Restoring snapshot transfers”), allows you to stop transferring snapshots of the source to destination when necessary. This is useful, for example, if you need to change the source storage hardware or location. After the hardware or location has been replaced, you can re-activate the snapshot transfer, which will continue to append to the existing snapshots in the destination.
Before re-activating a snapshot transfer
When a snapshot transfer has been de-activated, the mapping from the source to the destination is broken.
If you choose to re-activate a snapshot transfer, you must re-map the source. To do this, you must select a source that contains at least one common snapshot with what exists on the destination volume/qtree.
The Storage Device will automatically select the latest common snapshot (between the source and destination) to synchronize and use for the differentials on subsequent snapshot transfers.
To re-activate a snapshot transfer
1. Snapshot Transfer Menu > Snapshot Transfer.
The Snapshot Transfer Manager screen appears.
2. Select the required snapshot transfer, right-click, and select Re-activate.
3. Select the source Storage Device and click Next.
4. Select the volume/qtree on the source Storage Device and click Next.
5. If required, you can set a bandwidth throttle.
6. Click Finish.
If re-activation is successful, a new snapshot will be transferred to the destination storage.