Take a look at maxnummp for the node backing up the data.  If it's set to
0, your data will not go to tape.

Ted

At 10:49 AM 1/14/2004 -0500, you wrote:

i have a disk storage pool which i previously never coded a maximum size
threshold for
i changed the disk storage pool to a max of 100mb, the server started
backig up. it
was running ok till it tried a 300mb file, i thought the 300mb file would
then go to the
next storage pool directly which is a tape pool.

this mesage appeared in the dsmerror log file

ANS1312E Server media mount not possible


the device class for the disk storage pool is

   Device Class Name: DISK
Device Access Strategy: Random
    Storage Pool Count: 7
                Format:
           Device Type:
 Est/Max Capacity (MB):
           Mount Limit:
 Mount Retention (min):
      Mount Wait (min):
             Unit Name:
                  Comp:
          Library Name:


the device class for the tape storage pool is

   Device Class Name: NT3590
Device Access Strategy: Sequential
    Storage Pool Count: 1
                Format: 3590B
           Device Type: 3590
 Est/Max Capacity (MB): 9,216.0
           Mount Limit: 3
 Mount Retention (min): 1
      Mount Wait (min): 60
             Unit Name: 3590-1
                  Comp: Yes
          Library Name:


tim brown