SCSI DDS-2 Tape drives

[Gavin Hamill <gdh@acentral.co.uk>]

Hi :)

I've just acquired a HP C1533A tape drive, and whilst I can successfully
tar files back and forth from it, I'm poking in the dark..

I'm using 90m DDS-1 tapes, which give an uncompressed capacity of 2Gb with
this drive... but are there any tools to accurately measure both the data
rate and the precise capacity of the drive/tapes?

I ask this because I have a large amount of (already-compressed) data that
I'd like to span across several tapes, and would like to squeeze as much
as possible onto each tape :)

Any advice would be greatly appreciated :)

Kind regards,

Gavin.