We have resently had some consultancy for a sharepoint 2010 install and now have a 6 server setup; two web front ends, two application servers and a clustered (active/passive) SQL installation. This is all running windows server 2008 R2 on top of vmware (ESXi 4.1 hosts) and has all gone pretty well.
We intend to backup the sharepoint environment with snapmanager for sharepoint. However, we've since discovered that the storage configuration we have used for the sql servers might not be supported:
We have luns presented over iscsi to the virtual machines. These are managed by windows Failover Cluster Manager. What we have since been told (and I would like to confirm if this is the case) that snapmanager for sql only supports Failove Cluster Manager (Quorum disk witness etc.) if you present the storage over fcp, not iscsi.
If this is the case, we suspect that the only way out of this is to implement an FCP network (not cheap and certainly not budgeted for) or move the database to a non clustered sql server.