Creating schedules for synchronized snapshots
You can use the VSS Snapshot Scheduler wizard to add a snapshot schedule. The scheduling capability automates the process of refreshing snapshot sets simultaneously on the Primary and Secondary nodes. At the time that is scheduled for the snapshot, the snapshot volumes are automatically reattached, resynchronized, and then split again. Once configured and applied, a scheduler service VxSchedService.exe maintains the schedule.
If the Secondary host initially satisfies the required conditions but during execution of the synchronized snapshot operation some of the checks fail, then the command does not fail, but proceeds with creating the snapshots on the Primary host.
The wizard then logs an event with an appropriate error code, which can be viewed through the Event Viewer.
Note: |
The VSS Snapshot Scheduler wizard does not prepare the snapshot mirror. Prepare the snapshot mirror on the Primary and Secondary hosts with the prepare command before running the VSS Snapshot Scheduler wizard. |
To schedule a snapshot for a selected component
- From the VEA console URL bar, select the <host name> which is the system where the production volumes and snapshot mirrors are located, as the active host.
- In the tree view expand the system node, the Storage Agent node, and the VSS Writers node.
Select one of the following depending on the application for which you want to create the snapshot:
For Exchange, right-click and click .
For SQL, right-click and click .
- In the Welcome panel, review the information and click .
- On the Select Component panel, specify the snapshot set parameters as follows and then click .
Complete this panel as follows:
- In the Change Attributes panel, optionally change the attributes for the snapshot volumes and click .
Complete this panel as follows:
- On the Synchronized Snapshot panel, select the Secondary hosts for which you want to create synchronized snapshots. Either double-click on the host name or click the option to move the host into the Selected Secondary Hosts pane. To select all the available hosts, click the option. The VSS wizard creates synchronized snapshots on all the selected Secondary hosts.
This panel is displayed only in an environment using Volume Replicator. Otherwise, you are directly taken to the Schedule Information panel.
- In the Schedule Information panel, on the General Options tab, you need to the following.
Complete the information as:
- To specify additional schedule days or dates, make selections on the following tabs:
If two schedules overlap for the same snapshot set, only one snapshot is taken. For example, if you select every Thursday plus the last day of the month, and the last day of the month occurs on Thursday, then only one snapshot is taken on Thursday.
- Click .
- Review the snapshot set and schedule details and click .