[nycbug-talk] tape drive woes
tillman at seekingfire.com
Fri Feb 4 12:06:20 EST 2005
On Fri, Feb 04, 2005 at 11:19:37AM -0500, Dan Langille wrote:
> On 3 Feb 2005 at 22:11, Tillman Hodgson wrote:
> > camcontrol negotiate da0 -R10 -q -a
> > I'm simply moving the bus from 20MHz to 10MHz which, at 16 bits wide,
> > moves me from 40MB/s to 20MB/s. That's more than fast enough for the
> > drives I have in the JBOD (which aren't ever accessed simultaneously
> > with the use I've put them to) and all top out at about 12MB/s
> > anyway).
> I've not tried that yet. Last night, I tried a DDS-2 tape. I was
> able to back up. But I still think something is wrong. It's a DDS-4
> drive, and I was unable to do a backup on a DDS-4 tape.
> While it was labelling the tape, a bit of tape would be fed through,
> then the unit would "click" three times, rewind, and read the tape
> again, click three times, repeat... several times.
That sounds more like a mechanism problem. Is this a fresh tape? If not,
does retensioning it cause the same clicking?
"Belief gets in the way of learning."
-- Robert Heinlein
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