HA shared storage to simpify mgmt. of and support migration of Hyper-V or VMware Server VMs?

HA shared storage that allows concurrent access to PVS datastores?

Flexible, HA shared storage; App. Clustering for SQL; Centralized mgmt. of Windows file shares?

Flexible, HA shared storage; Software-based RAID 1; App. Clustering for SQL; Centralized mgmt. of Windows file shares?