Users Guide

Storage Solutions Guide 13
Disk Interface
After the disk type and storage location have been determined, the next step
is to determine what type of virtual storage controller the disk will reside on.
Hyper-V supports both IDE and SCSI controllers for VHD and passthrough
disks. The controller type selected will determine the disk interface type that
the guest OS will see. This disk interface type (IDE or SCSI) is completely
independent of the physical disk technology. This concept is shown below in
Figure 5 with a fibre channel storage array. All VMs must boot from an IDE
device. Additional disks may reside on either an IDE or SCSI controller.
Storage array • Support for HA VMs and
VM Quick Migration.
• Provides additional
storage capacity for the
server.
SMB/CIFS share • Support for HA VMs and
VM Quick Migration.
• Provides additional
storage capacity for the
server.
• Does not support
passthrough disks.
• Relatively lower
performance
Type Advantages Disadvantages