SUMMARY removing external scsi device without reboot

From: joe ritter <>
Date: Wed Jun 25 2003 - 01:47:21 EDT
Hello my original post is at the end.

Firstly thank you for all your answers.

The overwhelming concensus is that this procedure is
ok. We have all seen a scsi cable come out of the back
of a Sun machine and not hesitated to plug it back in
I guess. A couple of caveats were to make sure that
that this was not the terminating device in the chain.
Since the was the external SE connector this was the
only device haning off of the channel in my case. One
should make sure that the device is powered on before
pluging it into another system and to make sure that
in  a hot plug like this that you make the connection
flush the first time with little fiddling as this
could really disturb a system Also make sure that the
scsi chain is rather quiescent during this operation.
Of course there is some risk in doing this operation
but I believe it is slim. This is of course is not to
be considered a "best practice" by any mean but there
is a time and a  place when you are in a pickle and
this will do.

PS what do we need to do to educate people about
autoresponders to a professional mailing list? A
systems admin mailing list no less.

--- joe ritter <> wrote:
> Hello,
> I have Sun 220R running Solaris 7. I have an
> external
> SCSI tape drive attached. I am in a bit of a pickle.
> I
> need attach the drive to another machine and back
> that
> machine up. I am wondering if the following is
> possible and what the repercussions might be:
> Unplug the external scsi cable from the 220. 
> Attach the external tape drive to another machine,
> reboot that machine to have ir recognize the new
> hardware and back it up.
> Unplug the tape drive and simply connect it back to
> the original SUN machine without rebooting.
> I guess I am worried about a bus fault or panic
> occuring once I plug the tape drive back into the
> 220R. However I want to say that I have external
> scsi
> cables become detached before and as long as there
> is
> no data being moved over them everything should be
> fine. If anyone could lend some insight regarding
> the
> it would be greatly appreciated.
> Thanks
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Received on Wed Jun 25 01:50:24 2003

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