Hello Andrea and John!

After I got the drive, I  had to buy the DIFF stuff to use it. The Adaptec
adaptor reads SCSI DIFF on the connector and the cable is a DIGITAL (part
number BN38C-05), rather long, maybe 10m, but reads 300V SHIELDED TYPE CL2,
so, I suppose it is the right thing. I did have connection problems (would
get bogus characters in SCSI BIOS boot up) with some other cable, but after
replacing for this one seemed solved. Terminator reads DIFFERENTIAL and has
the Sun 4-S logo, with a green LDE lit when the host is online. I suppose
this means it is an ACTIVE terminator, but I am not sure. The drive is alone
on the BUS.

The dmesg idea was pretty good, I hadn't thought about it so far, but no
SCSI error reports there either. :(

Would the drive reset and go offline (ready to remove the media) with a SCSI
connection error?

I will probably try some other cables and terminators when I get back from
new year's break... I hope that's the problem... I am not sure if I have run
QUANTUM diagnostics tools with this particular configuration in that past,
but I will get some windows system up to try it. This should detect possible
connection problems, I suppose.


Thanks for the help so far!

On Mon, Dec 29, 2008 at 5:20 PM, Andrea Conti <a...@alyf.net> wrote:

> Hi,
>
> > dev open failed: dev.c:432 Unable to open device "DLT8000" (/dev/nst0):
> > ERR=\
> > Input/output error
>
> Sounds like some kind of hardware (SCSI) problem, with the kernel driver
> resetting the bus and losing the device at some point. Is your
> cabling/termination ok?
> Are there any error messages in the kernel log (dmesg)?
>
> > Drive is a QUANTUM DLT8000, External operating on a DIFF SCSI
> > connection. The adaptor shows as
>
> > 00:09.0 SCSI storage controller: Adaptec AHA-2940U/UW / AHA-39xx /
> > AIC-7895 (rev 04)
>
> Are you sure this controller can handle differential (LVD? HVD?) SCSI?
>
> FWIW, I've been using a DLT8000 drive with bacula for the past two years
> without a problem.
>
> Andrea
>
>
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