When I think about blade servers and storage, to be honest, I think about Fibre Channel (FC) SAN. The Virtual Connect (VC) technology is pretty powerful. Even today when talking about high uptime options for a client we decided on a “hot spare” blade where we could flip over the VC profile if the original machine died.
Fibre Channel SAN isn’t an option for everyone. iSCSI is a powerful option, especially with 10GB Ethernet or Flex10 as HP brands it in their Blade System. There’s a lot of questions you might have about iSCSI and HP BL Proliant servers so HP has published a handy 3 page FAQ that goes through support and options. With something like iSCSI, HP Blades and Flex10 you could possibly set up Blade hosts to run Windows Server 2008 R2 Hyper-V with the parent partition on internal SAS disks and the cluster shared volume running on iSCSI.
I prefer iSCSI for FC. It`s enough powerful and using of software iSCSI targets, such as one from Starwind Software lets you to reduce TCO.
Anyway will be glad to hear your opinion.