Toomas Aas wrote:

BTW, I'm using a DLT1 drive (40 GB native) with hardware compression. My typical backup run is ca 40 GB, but after the new year, when Amanda autoflushed all the christmas-time dumps from the holding disk, it hit EOT at approximately 52 GB. Your data is different from mine, of course, but I do think that being able to tape this 53128750 kB dump with 40 GB tape drive and hardware compression cannot be taken for granted.

For whatever value it has here are the reports from our system from 2006.
We don't hit EOT all that often on our DLT-4000. You can see there is
quite a range of dumpsizes there. Most are below your size and I wouldn't
bet on it fitting. If I had to guess I'd say about half of this usage is
ascii.

  taper: tape Daily002 kb 50196096 fm 33 writing file: No space left on device
  taper: tape Daily001 kb 55124512 fm 36 writing file: No space left on device
  taper: tape Daily009 kb 50036448 fm 51 writing file: No space left on device
  taper: tape Daily002 kb 51181408 fm 49 writing file: No space left on device
  taper: tape Daily008 kb 50634176 fm 48 writing file: No space left on device
  taper: tape Daily001 kb 49143424 fm 20 writing file: No space left on device
  taper: tape Daily007 kb 45569632 fm 46 writing file: No space left on device
  taper: tape Daily010 kb 61835808 fm 43 writing file: No space left on device
  taper: tape Daily001 kb 48237696 fm 50 writing file: No space left on device
  taper: tape Daily005 kb 57189056 fm 42 writing file: No space left on device
  taper: tape Daily007 kb 61271168 fm 50 writing file: No space left on device

- Joel