20 March 2014
I found myself in a position were I needed to duplicate a copy of an existing volume on a HP StoreVirtual (aka LeftHand) SAN cluster. Easy, right? HP StoreVirtual is a mature SAN solution which should do this in a few clicks. Well it turns out this is not the case.
As any good IT Pro does, I held back the urge to go straight to Uncle Google and Mr Bing and trawled through the HP StoreVirtual documentation and read a lot about the Volume Snapshot and SmartClone features but they don’t provide what I required- an exact copy of an already existing Primary Volume as another primary volume.
The solution in the end was to use a feature called Remote Snapshot. The purpose of this feature is mainly for DR and testing but can be used for what I needed. I’ve outlined the steps below:
- Right click the volume you want to duplicate and click New Remote Snapshot
- Click the New Snapshot button and provide a name (default name is fine)
- Click the New Remote Volume button
- Ensure the Existing Cluster and Add a Volume
- to an Existing Cluster options are chosen
- If you have more than one Management Group, choose where you want the duplicate volume to be stored
- Provide a name and description for the duplicate volume, click Finish and click Close
- You will be brought back to the New Remote Snapshot window. The Remote Volume Name: and Snapshot Name: fields will have been automatically completed.
- Click OK.
- This will kick off the volume copying process.
- To view the status of the copying process, click the volume and choose the Remote Snapshots tab.
- When the % Complete column reaches 100% the copying process has finished, you will not receive a prompt advising this.
- Right click the duplicated volume (not the snapshot) and click the Failover/ Failback Volume option.
- Click Next.
- Choose the option To fail over the primary volume and click Next.
- Click Next.
- Add a description, adjust the volume size as required and choose the provisioning type.
- * Note- even if the source volume is Thin provisioned, this will not be carried over as the Full option will be chosen as default.
- Click Finish and Close.
- Now delete the snapshot on the original drive and the snapshot on the duplicated drive.
- At this stage you will now have 2 identical primary volumes.