Using SFHA on Windows, under VMware

Hi,

I don't believe you have to use RDM's, if you can configure a VMDK that is available to both hosts that would work fine.

As for Vmotion, if you think about it, after you cluster, there is no need to vmotion the server (with the application online). If you need to reboot or perform maintenance on a host containing the active cluster node, simply failover to the other node (which should be on a different host). I know this is technically downtime, but as you'll now, even with Vmotion the connection will drop for a few seconds. Depends how many seconds you can accept.

When you're running VCS inside a guest, the only storage configuration capable of support vMotion is iSCSI in guest, or NFS inside the guest using the mount agent. RMD/VMDK's are not supported for vMotion from a VCS perspective.

You can also have a look at ApplicationHA, its basically a VCS agent running in the guest, which is monitored from vCenter (similar to what VCS for ESX used to provide before Vmware locked down the console).

I've attached the doc about VCS and Vsphere :)