[899] in linux-scsi channel archive
Re: termination
daemon@ATHENA.MIT.EDU (Francisco J. Montilla)
Thu Nov 7 13:35:20 1996
Date: Wed, 6 Nov 1996 01:31:53 -0500 (EST)
From: "Francisco J. Montilla" <pacopepe@nova.es>
To: Russell Berry <rberry@albany.net>
Cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <327ECCF5.16C2AB32@albany.net>
On Tue, 5 Nov 1996, Russell Berry wrote:
> I hate to sound like an idiot here, because I'm not..
>
> no, really, I'm not! I work with this crap every day, my mind
> just seems to be drawing a blank right now. I have:
> NCR53C810-----1G_fast_scsi-II terminated scsi-id0
> |------1G_fast_scsi-II not-terminated id1
> |------.5G_fast_scsi-II terminated id2
>
> all three disks internal, nothing external (yet) they work,
> and seem fast, I'm just unsure at this particular moment if
> I should have two of them terminated or not...
Sure not. The first one (SCSI ID 0) shouldn't be terminated. What
you have to have terminated is both ends of the SCSI chain; the
controller acts as a SCSI device too, and as it has "automatic"
termination, it will terminate it's end unless you attach an external
dirve, which will have to be terminated; on the other end (the 5G SCSI ID
2 --> :-)~ 5Gb!) the HD sould be terminated.
Another good thing is that _all_ devices on the scsi chain should
have SCSI parity enabled, and supply term power, and (not applicable to
you, with only HDs) put faster drives, like HDs first (IDs 0-2) medium
drives after (CD-Rom, etc) and slowest drives last (eg, CD-Writers,
tapes)
what's that machine for? a news server?
Hope this helps,
*****---(*)---**********************************************---------->
Francisco J. Montilla Irc: pukka Seville
pacopepe@nova.es FiDO: 2:345/402.22 Spain
INSFLUG (LiNUX) Coordinator. www.insflug.nova.es / ftp.insflug.nova.es
