HP SureStore E SAN Manager LUN Management Administrator's Guide

170 Disk Administrator
Disk Administrator
Disk Administrator is the utility provided with Windows NT for managing disk partitions. It
discovers the disks and partitions attached to the host on which it is running only at the
time the program starts running.
Disk Administrator does not hold disks open, and the View  Refresh menu item does not
actually detect the addition or removal of storage since the time Disk Administrator
started. For this reason, although it is possible to change the device assignments of a host
while Disk Administrator is running, HP does not recommend doing so. For example, if a
device is unassigned from a host, and the partitions for that device are changed in Disk
Administrator, the program may encounter unexpected errors or exit abruptly without
committing changes.
In some cases, devices that have been unassigned are still listed in Disk Administrator as
unavailable. This does not mean that the storage is still accessible to the host. The SAN
Manager LM disk driver maintains these “disks” as placeholders so Disk Administrator and
other storage administration software can successfully find all of the disks that are still
assigned.