[SUMM] Invisible tape unit

From: Guy Dallaire <dallaire_at_megatoon.com>
Date: Mon, 6 May 1996 14:57:13 -0400

Thanks to all who replied. Here are the various replies:

>I recently added a tape unit to my Alpha Server 400/233. I followed these
>steps. The unit (TLZ06) is in an SBB which I inserted in the LEFT slot of a
>BA-353 storage box (pizza box style). That equipment was lent to me and I
have >no documentation. I had to borrow it to do backups while I wait for an
internal >TLZ07 to be shipped to me.

>Here is what I did:

> 1) Plugged a SCSI cable between the external SCSI connector of the
ALPHA
> and the SCSI input on the BA-353
> 2) Used the set Control_SCSI_term external command on the SRM console
> 3) Rebooted the system. Had some problems, the machine could not find
> the boot disk device. Presumed a SCSI ID conflict, played with the
> little switch in the back of the BA-353 and set the tape SCSI ID to 6.
> System booted OK. (Did I do what I had to do ?)
> 4) On the console, I see the TAPE drive on bus 0, SCSI ID 6.
> 5) But when I boot, I see all my disks, and my CD-ROM but I have no
> message telling me about the BA-353 and/or the TLZ06. Is it normal ?

>I could MAKDEV rzt6 and I had no problems. I even dumped a filesystem and
>everything "seems" fine. I'm not sure my system is well configured and I
fear >future problems. I have the following questions/concerns:

> a) Does my setup seem OK to you ? In particular, I'm wondering if
using
        a BA-353 automatically "terminates" my SCSI bus. I read that an
        unterminated SCSI bus could break havoc on my disks.
        
> b) I'm using 120m DAT tapes. I read that the TLZ06 only supports 60
or 90m
        tapes. It seems to work, will I be able to restore my backups with
my TLZ07
        when I receive it ?

============================================================================
=======================

1) Most respondents told me to run doconfig in order to have the device
listed in the boot messages.

2) The TLZ06 is compatible with the TLZ07, but I should not use 120m
cartdridges in the TLZ06
as they are thinner and can jam in the unit.

3) I should have used SCSI ID 5 for the tape intead of six, but that does
not matter.

4) No one could confirm that the BA353 terminates the bus.

                                                Thanks again

P.S.: I decided to back up the machine on a remot server with rdump because
I fear a termination problem and someone told me that it could lead to data
corruption !
Received on Mon May 06 1996 - 21:25:21 NZST

This archive was generated by hypermail 2.4.0 : Wed Nov 08 2023 - 11:53:46 NZDT