There are many storage scenarios with Microsoft Windows Server 2008 Hyper-V. Since you are dealing with host and guest Operating Systems, it is important to know the storage combinations for Hyper-V. The host OS can support directly-attached storage (SATA, SAS) or SAN storage (Fiber Channel, iSCSI). Once storage is attached to the host, it can be exposed to the guest in a number of ways. These include:

• VHD or Passthrough disk on the host
• IDE or SCSI on the guest
• iSCSI directly to the guests

Another important factor when dealing with Hyper-V VMs is moving disks between hosts. This is a little bit different than ESX or Xen. Since you are dealing with the Microsoft iSCSI Initiator, there are some limitations to shared storage. Although Windows Server Failover Clustering and System Center Virtual Machine Manager help automate things.

To help make sense of all these storage scenarios, check out the Dario IT Solutions blog post titled “Windows Server 2008 Hyper-V Storage“. There is a lot of good information there with comparison charts and screen shots.

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