Configuring the host disk

For virtual disks, bring the new LUN online and initialize it. Assign drive letters to the volume to contain the guest OS configuration files and VHDs. A volume with a mount point is not supported by IBM® Storage Support for Microsoft VSS and VDS NPIV.

For pass-through disks, two LUNs per guest are required. One LUN is required for the configuration files and the other LUN is required to install the OS. The volume that contains configuration files must be assigned a drive letter. Make sure that the disk is offline when you install the OS.