Date: Fri, 26 Dec 2003 13:07:45 -0500 From: Bob Collins <bobc@anything-inc.com> To: Mike Maltese <mike@pcmedx.com> Cc: freebsd-questions@freebsd.org Subject: Re: DAT drives Message-ID: <20031226180745.GB62741@yoda.anything-inc.com> In-Reply-To: <002401c3ca6e$8e3f6b00$f4f0a8c0@pcmedx.com> References: <200312240451.hBO4pdf0001269@typo.org> <002401c3ca6e$8e3f6b00$f4f0a8c0@pcmedx.com>
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On Wed, Dec 24, 2003, Mike Maltese wrote: > > Okay, probably a dumb question but I can't readily find an answer > > in the archives.. > > > > I just picked up a (used) surestore C1533A (thats an HP device) and am > > having some problems getting it work quite right. I've got the dip > switches > > set correctly (I was able to find at least 3 corroborating pages for that) > > but can't manage to get it to write correctly. It will only write about > > 50 megs using 0a as dump flags. Trying to specify -B and estimating > > compression got me to about 200 but it's a 4 gig drive. All it wants to > > do is write a few blocks, sit and sputter for a second or two, write a few > > more, (repeat for about 15 minutes) and then tell me it's at EOM well > before > > it should be. > > > > There are notes in the hardware compatability section that says this > > drive has been made to work onder FreeBSD so I know at least that it's > > not simply an unsupported device. > > > > Any suggestions from the folks in the audience? > > This is a DDS2 SCSI drive, correct? I have a C1553A in an autoloader and it > works flawlessly. > > I would check the following: > > 1. Since you're getting EOM, check that the tape is, in fact, rewound. > > 2. Try a new tape. > > 3. Run a cleaning tape. > > 4. Ensure that the SCSI bus is correctly configured and terminated. > I would add a second to the SCSI termination. I ran into an error with my DDS-2 a few weeks back due to a failing or flaky terminator in the tape drive. I had to add a true terminator to the SCSI cable. I had many such troubles with tape errors EOM etc., until I checked the termination. FWIW, I had read that the internal terminator on many older SCSI devices are often flaky and touch and go. Good Luck. -- Bob
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