must be a valid ID. The valid IDs can be found in the Affinity list for any  cartridge in the robot. Use the 
command “mtlib -l <device name> -qV -V<volume name>” to obtain the Affinity list  for a cartridge.
Polling Interval (tape only).  The number of seconds to wait between polling request s performed by the 
PVL to determine if any media is present in the drive. Use -1 to disable polling.  Values of 0  to 14 are not 
valid.
Advice - The value for tape drives located within robotic libraries  should  be set higher than for 
manually mounted drives. It is recommended that this field be set to 15 seconds  for operator-mounted 
tape drives and 900 (15 minutes) for library-managed tape drives.
Mounted Volume (disk only). The 8-character name of the volume mounted on the disk drive.
Drive Pool ID (tape only). If non-zero positive integer value, the Drive Pool ID will restrict  this drive to 
only be scheduled for tape read requests specifying this value. The default Drive  Pool ID is 0 to indicate 
that the drive is not restricted to a particular drive pool. Negative values are  not allowed. See Section 7.3: 
Drive Pools on page 218.
Comment. This field provides a 128 character buffer in the PVL drive metadata  which gives the 
administrator the opportunity to associate miscellaneous text with a device/dri ve. For example, a site may 
want to place a comment in this field that the drive is out of service or being used by another  system, etc.
7.1.1.  Devices and Drives  WindowHPSS Management Guide November 2009
Release 7.3 (Revision 1.0) 202