[3134] in linux-scsi channel archive
Re: Buslogic 958 Ulta Wide controller
daemon@ATHENA.MIT.EDU (Leonard N. Zubkoff)
Tue Jan 27 00:51:16 1998
Date: Mon, 26 Jan 1998 21:26:44 -0800
From: "Leonard N. Zubkoff" <lnz@dandelion.com>
To: garyp@jppattern.com
CC: linux-scsi@vger.rutgers.edu
In-reply-to: <Pine.LNX.3.95.980126173436.32575A-100000@inet.jppattern.com>
(garyp@jppattern.com)
Date: Mon, 26 Jan 1998 17:41:11 -0600 (CST)
From: "Gerald J. Puhl" <garyp@jppattern.com>
Hi everyone,
I have a BL 958 UW SCSI controller with a Seagate ST34371W (UW) disk
drive). On boot the driver (running Red Hat 5.0) reports 10Mega-transfer
rate. I believe I should be able to get faster than that (more like
40MB). What am I not doing correctly? I am using the cable supplied by
the Buslogic kit to connect to the internal disk. I didn't see any
specific terminator that came with it, perhaps this is a problem?. I
imagine you all see messages like this come across often. Please be nice
to me, a poor little brain.
I believe the following should explain this:
o Enabling UltraSCSI Transfers
The BT-948/958/958D ship with their configuration set to "Factory Default"
settings that are conservative and do not allow for UltraSCSI speed to be
negotiated. This results in fewer problems when these host adapters are
installed in systems with cabling or termination that is not sufficient for
UltraSCSI operation, or where existing SCSI devices do not properly respond
to synchronous transfer negotiation for UltraSCSI speed. AutoSCSI may be
used to load "Optimum Performance" settings which allow UltraSCSI speed to be
negotiated with all devices, or UltraSCSI speed can be enabled on an
individual basis. It is recommended that SCAM be manually disabled after the
"Optimum Performance" settings are loaded.
