4.0.0 HP Polyserve Matrix Server Administration Guide (T5392-96052, March 2010)

After the drive letter or path has been unassigned, you will not be able to access the
filesystem until you assign a new drive letter or path to it.
To remove assignments from the command line, use this command:
mx fs unassign <filesystem> <ALL_SERVERS | server ...>
Set permissions for filesystems accessed via mount points
With mount point (or mount path) assignments, the PSFS filesystem, or volume, is
mounted in an empty directory on an NTFS volume. The actual root directory of the
PSFS volume is not directly accessible when managing filesystem security. By default,
Windows Explorer displays the mount point folder, not the root directory of the PSFS
volume, and the Cacls.exe utility can set permissions only on the mount point
folder. Permissions applied to the mount point folder do not apply to the underlying
root directory of the mounted volume. This is by Microsoft design.
It is possible, however, to set permissions on the root directory of a mounted volume
using either the Cacls.exe utility or Windows Explorer.
Cacls.exe. Use the cacls /m command-line switch to apply permissions. Without
this option, permissions are applied to the parent NTFS volume mount point folder.
When the /m option is used, the permissions are applied to the child PSFS volume
root directory.
Windows Explorer. Right-click the volume mount point in Windows Explorer and then
select Properties. The Type field specifies that this is a Mounted Volume.
Configure PSFS filesystems120