>Is there another sense in these "d", "s" and "b" switches for the
>ufsdump-command than to calculate how much time a specific dump will take?
and soon I did a mistake (asking for the "b"):
I knew that the "b" switch (blocking factor) is *very* useful to
optimize the speed of a dump to a specific kind of tape-drive:
Example from "David Evans" <DJEVANS@au.oracle.com>:
>On a DLT I changed blocking from default to
>65536 under cpio and dropped that backups from 12 hours to 3 hours. But
>you need to test as it can increase times as well
"d" and "s" - now i've learned this:
-> the old SunOS *required* these switches!
-> Solaris on the other hand is able to "sense" the end of a tape,
if the drive is "modern enough"
This "modern enough" is obviously true for "my" DDS-[2/3] DAT-drives
and so i could (and can) safely ignore these switches.
I've been told, that "modern enough" is not true for those old 9-track
reel-tapes (are they still in use somewhere???), which still need these
One "vote" was, that multi volume dumps may need these too.
I never tried and so, i can't tell...
Thanx again to all of you who took time to answer me!
-- ***** Max-Planck-Institut fuer Astrophysik ***** Bernt Christandl Tel: +49 / 89 / 3299-3232 Postfach 1523 Fax: +49 / 89 / 3299-3235 Karl-Schwarzschildstrasse 1 85740 Garching ******** Email: email@example.com ********
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