Date: Tue, 13 Feb 1996 16:06:22 -0600 (CST) From: Bob Willcox <bob@luke.pmr.com> To: fcawth@jjarray.umd.edu (Fred Cawthorne) Cc: freebsd-hardware@FreeBSD.org, freebsd-scsi@FreeBSD.org Subject: Re: Exabyte 8200 Message-ID: <199602132206.QAA18341@luke.pmr.com> In-Reply-To: <199602132046.PAA00282@jjarray.umd.edu> from "Fred Cawthorne" at Feb 13, 96 03:46:38 pm
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Fred Cawthorne wrote: > > > I have just upgraded the firmware in my Exabyte 8200 drive to a newer > version, and now it at least works with FreeBSD-current... The problem > is that it is streaming very slowly. It isn't stopping and going, but it > only writes about 60-80 K/second. I have heard that people use this > drive, and I wanted to know if there are any special modes to select or > anything. Do people ever get resonable speeds with this drive?? > I know this thing is old but it seems that it should be able to write a > 2 gig tape in under 6 hours... > > Any information would be appreciated... I have several of these that I use on 2.1-stable systems w/o any (major) problems. Performance is right at the theroetical limit of 240kb/sec. Mine are connected to NCR 810 controllers. I use them with dump, tar, cpio, and afio. Sometimes when I feel like it I will pipe the output through team to the drive (though I don't think it really changes the performance any). The problems that I do have with the drives is one of positioning to different files down the tape. When I dump to them I will place multiple file systems on a single tape as multiple tape files (as many as will fit in the 2gb). This works ok, but it is a real pain to get restore to properly locate the desired tape file. So far, I've yet to fail to get the file I need when really necesary, but is is never easy (and I really don't know why...it should be easy, the documentation makes it sound easy). > Fred. > -- Bob Willcox bob@luke.pmr.com (or obiwan%bob@uunet.uu.net) Austin, TX
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