On Thu, 19 Mar 2009, Jaime wrote:

On Thu, Mar 19, 2009 at 7:37 PM, Warren Block <wbl...@wonkity.com> wrote:
And the device acts flaky.  That screams "SCSI termination problem" to me.
 That would also be consistent with most/all of the tapes failing, because
it's not the tapes.

I've checked the termination more times than I can remember.  (No
exaggeration.  Problem had been on-going for months.)  Its OK.  I have
one bent pin on one of the two "ports" on the SCSI cable, but it (1)
isn't the one being used and (2) doesn't touch any other pins.  Its
just an unusable "port" on the cable, not a source of ... "cross
contamination," I guess you could say.

Two terminators, one at each end of the bus? Another possibility is that the terminators are fine, but nothing is providing termpower (blown fuse or jumper). And there are different SCSI bus widths. The more devices you have, the more interesting it gets.

So I am pretty sure that we're OK on the SCSI chain.  I *am* starting
to wonder about the tape drive itself, though.

Could be the drive, or could be cables. If you have other devices on the bus and they work fine on large, fast transfers, then suspect the tape drive. If you can get that one tape to work repeatedly but none of the other tapes will, maybe a bad batch of tapes.

-Warren Block * Rapid City, South Dakota USA
_______________________________________________
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"

Reply via email to