[SunHELP] 6gb, ~1.5hour to backup

[Markham, Richard]

--DUMPING /opt
  DUMP: Writing 32 Kilobyte records
  DUMP: Date of this level 0 dump: Sat Mar 06 19:11:01 2004
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/md/rdsk/d5 (oracledb:/opt) to /dev/rmt/0cbn.
  DUMP: Mapping (Pass I) [regular files]
  DUMP: Mapping (Pass II) [directories]
  DUMP: Estimated 11957340 blocks (5838.54MB).
  DUMP: Dumping (Pass III) [directories]
  DUMP: Dumping (Pass IV) [regular files]
  DUMP: 11.95% done, finished in 1:13
  DUMP: 24.77% done, finished in 1:00
  DUMP: 37.85% done, finished in 0:49
  DUMP: 50.87% done, finished in 0:38
  DUMP: 63.99% done, finished in 0:28
  ...

It is taking 1.5 hours to dump ~6gb to a HP Tape drive.


Is this expected?  Is it the compression device ?

Solaris 8
Storedge D240, HP DDS4 Tape drive.