On Wed, 21 Jul 1999, Tim Jones wrote:
> Mike - what are you backing up? If I back up 4 GB of RPM or tar.gz
> files, the tape will probably top out at 4GB. However, 4GB of
> uncompressed C source files compress down amazingly well.
Pretty much a mix--quite a few large compressed files, but also a couple
of linux kernel source trees, as well as a bunch of MS Office docs, HTML
files, /usr/man/* /usr/doc/* and such. This issue is only biting me when
I do a full backup.
> As for the density issue, make sure that your mt is 0.5b (should be with
> RH 6.0). The density code is displayed primarily for your edification.
Yup, even grabbed mt-st-0.5b from metalab and recompiled.
> Also, make sure that you're using 120m tapes.
That too. Interestingly, when I do use 90m tapes, I get over 3GB data
written, so I know that compression is working. But as soon as I pop in a
DDS2 tape, it seems like compression turns off, even when I do a "mt
compression 1".
Mike
--
Mike Tibor Univ. of Alaska Anchorage (907) 786-1001 voice
LAN Technician Consortium Library (907) 786-6050 fax
[EMAIL PROTECTED] http://www.lib.uaa.alaska.edu/~tibor/
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