I have a 3-host cluster of Oracle VM 3.2 servers. The cluster filesystem and repository both live on SAN 1 (IBM XIV, if you care. We re migrating from the XIV to an EMC VNX 5400 (SAN 2). I need to somehow get all the Oracle VM stuff from SAN 1 to SAN 2.
QUESTION: How do I do that? You get extra points for moving everything without causing any downtime.
I suppose the one repository is easiest. I can just create another one on SAN 2, and move all the repository content over to it, right? Or is there an easier way.
The cluster filesystem seems harder to do. I don't think I can create another one, and then move to it, can I? I thought about shutting down everything, creating a new LUN on SAN 2 of the same size as the cluster filesystem, and then copy (with 'dd' or something) one disk to another. Then I'd remove the copy on SAN 2 from all the Oracle VM servers, and see if he still saw the cluster.
Has someone done this before? Can anyone give me (intelligent) advice on how to do this?