On this W2K server with an internal DAT 20/40 tape drive, running BE 9.1, full backup jobs normally write about 18 GB. Occasionally I get a job that ejects the tape at only ~ 15.5 GB written. While the drive is a 20/40 DAT, the tapes we've been using in it are DDS-3. (I will suggest we start using DDS-4 tapes.)
I'm wondering whether I should adjust the tape drive's configuration parameters to optimize tape usage. Currently its settings are
- Block size = 8K
- Buffer size = 32K
- Buffer count = 10
- High water count = 7
All options for "single block mode" and "SCSI pass-through mode" are unchecked.
Advice?
TIA
Bob Peitzke
IT Manager
Colony Advisors, LLC