A. No. A pass-through disk is any storage that is accessible to the Hyper-V server, such as direct attached or a LUN on a Storage Area Network. Remember that regardless of where the storage is, it must be offline on the actual Hyper-V server before the guest can be configured to access it via pass-through. Also remember that the entire disk is mapped to a guest, not a volume on the disk. Finally, the disk must be initialized before it can be used for pass-through, so if the disk isn't initialized then initialize it on the Hyper-V host then place it in an offline status so it can be used for pass-through.
Normally you use Virtual Hard Disks for virtual machine storage. When configured as fixed size, VHDs perform almost identically to pass-through storage, and you lose features such as snap-shotting when using pass-through, so always try and use VHD above pass-through.Related Reading:
- Q. If I have multiple physical network cards associated with different virtual switches in my Hyper-V cluster, how does Hyper-V know which virtual switch to map the virtual NIC to during a node move?
- Q. Does Hyper-V support 64-bit guests?
- Q. How can I tell how much CPU a guest OS is using from the host OS with Hyper-V?
- Q. Should I back up at the Hyper-V host level or within my guest OSs?
Check out hundreds more useful Q&As like this in John Savill's FAQ for Windows. Also, watch instructional videos made by John at ITTV.net.