Operating System - Tru64 Unix
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tape best density ?

Nabil Boussetta
Frequent Advisor

tape best density ?

what is the tape device file which give me the best density ?
5 REPLIES
Steven Schweda
Honored Contributor

Re: tape best density ?

It might depend on the tape drive.

"man tape"?
Johan Brusche
Honored Contributor

Re: tape best density ?


If the tapedrive manufacturer/model is defined in /etc/ddr.dbase (and compiled to /etc/ddr.db) then, /dev/[n]tape/tapec
will use the highest available density with compression enabled.

If the drive is of unknown make/model and it's highest possible density code reported via scsi inquiry is not even listed in ddr.dbase, then Tru64 will fall back to a default (see "default" under the "TAPES" header in ddr.dbase)

__ Johan.

_JB_
Michael Schulte zur Sur
Honored Contributor

Re: tape best density ?

Hi,

what os version do you have?

greetings,

Michael
Mulgund
Frequent Advisor

Re: tape best density ?

use /dev/ntape/tape0_d1 for no-rewind tape.
use /dev/tape/tape0_d1 if you wish to rewind after the dump/restore.

-Srinivas
Nabil Boussetta
Frequent Advisor

Re: tape best density ?

thaks