Date: Fri, 6 Nov 1998 07:01:49 +0100 From: Gunnar Flygt <gunnar@pluto.sr.se> To: David Wolfskill <dhw@whistle.com> Cc: FreeBSD Questions <questions@FreeBSD.org> Subject: Re: dump and Tandberg QIC drives Message-ID: <19981106070149.A16369@sr.se> In-Reply-To: <199811052244.OAA24386@pau-amma.whistle.com>; from David Wolfskill on Thu, Nov 05, 1998 at 02:44:57PM -0800 References: <19981105230125.A15599@sr.se> <199811052244.OAA24386@pau-amma.whistle.com>
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On Thu, Nov 05, 1998 at 02:44:57PM -0800, David Wolfskill wrote:
> >Date: Thu, 5 Nov 1998 23:01:25 +0100
> >From: Gunnar Flygt <gunnar@pluto.sr.se>
>
> >Is there anyone out there familiar with dump? I have a Tandberg
> >MLR-drive that installes beautifully by FreeBSD. The problem is with
> >dump. It seems that it wasn't written for drives that can do 16GB on one
> >tape. If I try to make a backup of 500MB I get a īcalculationī from dump
> >that it should take 52.36 tapes to make this backup. So I changed the
> >density parameter to the value given by Tandberg 67700BPI. I get a
> >better value. Now I need only 2.54 tapes to make my backup. There is not
> >enough parameter setting to use with big tapes, as far as I can see. The
> >default tape length is 2300 feet. my tape is only 1500 feet, but can
> >still host 16GB.
>
> Basically, you need to adjust the density & size parameters until dump
> acts the way you want it to. (Either that, or use amanda, or send the
> stdout of dump to a process (such as dd) that copies its stdin to tape).
Actually I downloaded amanda, but as far as I understand it uses tar or
dump to do the real work. Am I wrong? And is there some better
documentation. I didn't get much with the port.
--
__o
regards, Gunnar ---_ \<,_
email: flygt@sr.se ---- (_)/ (_)
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