Predefined File Volumes Not Filling To Capacity

Hi.

TSM 5.3.2.3 running on AIX 5.2.5

Yesterday, after formatting about 8TB worth of volumes for a file device
class, I defined the volumes to my stgpool.  I migrated some data there,
and let my backups run last night into the new 8TB space.  When I
checked this morning, everything ran fine, but something odd happened.
The storage pool showed less total space than it did yesterday.  Looking
at the volumes, some of them have very little data in them, and show an
estimated capacity much less than the 2GB I predefined them at.  Here is
a sample output:

/ts/i/s6001/v035          BACKDISK     BACKDISK      2,047.3  100.0
Full
/ts/i/s6001/v036          BACKDISK     BACKDISK      2,047.6  100.0
Full
/ts/i/s6001/v037          BACKDISK     BACKDISK      2,036.4  100.0
Full
/ts/i/s6001/v038          BACKDISK     BACKDISK         52.6  100.0
Full
/ts/i/s6001/v039          BACKDISK     BACKDISK      2,044.5  100.0
Full
/ts/i/s6001/v040          BACKDISK     BACKDISK         21.0  100.0
Full
/ts/i/s6001/v041          BACKDISK     BACKDISK         28.0  100.0
Full

In the log, it says end of volume was reached.  Thanks for any info on this.

Here is my device class:

            Device Class Name: BACKDISK
       Device Access Strategy: Sequential
           Storage Pool Count: 1
                  Device Type: FILE
                       Format: DRIVE
        Est/Max Capacity (MB): 4,096.0
                  Mount Limit: 1,024
             Mount Wait (min):
        Mount Retention (min):
                 Label Prefix:
                      Library: BACKDISK
                    Directory:
/ts/i/s7001,/ts/i/s6001,/ts/i/s7002,/ts/i/s6002
                  Server Name:
                 Retry Period:
               Retry Interval:
                       Shared: Yes
           High-level Address:
             Minimum Capacity:
                         WORM: No
              Scaled Capacity:
Last Update by (administrator): TS55428
        Last Update Date/Time: 02/28/06   09:01:22


Here is my stgpool:

              Storage Pool Name: BACKDISK
              Storage Pool Type: Primary
              Device Class Name: BACKDISK
             Estimated Capacity: 6,660 G
             Space Trigger Util: 12.4
                       Pct Util: 13.6
                       Pct Migr: 23.3
                    Pct Logical: 100.0
                   High Mig Pct: 100
                    Low Mig Pct: 99
                Migration Delay: 0
             Migration Continue: Yes
            Migration Processes: 1
          Reclamation Processes: 4
              Next Storage Pool:
           Reclaim Storage Pool:
         Maximum Size Threshold: No Limit
                         Access: Read/Write
                    Description:
              Overflow Location:
          Cache Migrated Files?:
                     Collocate?: Group
          Reclamation Threshold: 50
      Offsite Reclamation Limit:
Maximum Scratch Volumes Allowed: 0
 Number of Scratch Volumes Used: 0
  Delay Period for Volume Reuse: 0 Day(s)
         Migration in Progress?: No
           Amount Migrated (MB): 0.00
Elapsed Migration Time (seconds): 0
       Reclamation in Progress?: No
 Last Update by (administrator): TS55428
          Last Update Date/Time: 02/28/06   09:05:12
       Storage Pool Data Format: Native
           Copy Storage Pool(s):
        Continue Copy on Error?:
                       CRC Data: No
               Reclamation Type: Threshold