[1276] in linux-scsi channel archive
Re: looking for a write-protected SCSI disk
daemon@ATHENA.MIT.EDU (Keith Owens)
Fri Jan 17 20:27:50 1997
From: Keith Owens <kaos@ocs.com.au>
To: Jim Van Zandt <jrv@mbunix.mitre.org>
cc: linux-scsi@vger.rutgers.edu
In-reply-to: Your message of "Fri, 17 Jan 1997 14:12:33 CDT."
<199701171912.OAA23584@mbunix.mitre.org>
Date: Sat, 18 Jan 1997 12:12:31 +1100
On Fri, 17 Jan 1997 14:12:33 -0500,
Jim Van Zandt <jrv@mbunix.mitre.org> wrote:
> Can anyone suggest a SCSI disk drive (either internal or external)
> that has a write protect switch?
>
> How about an external drive that can be turned off but still leave the
> bus properly terminated?
>
> How about an external drive that can be easily disconnected? I am
> somewhat worried about connector wear on conventional cables. Are
> there such things as ZIF (zero insertion force) SCSI connectors?
Use an external SCSI box and put an internal disk drive in it, $40-50
for the case. If the the drive has a write protect jumper, wire a
small switch to it and mount the switch on the case. Alternatively, if
your SCSI chain is happy with external, inactive termination, disable
the drive termination and put an external terminator on the second
connector of the SCSI box. Separates the termination from the drive
power, works for me with a 1542 and Sysquest 270Mb, powered down most
of the time. YMMV.
