Date: Sat, 12 Jul 1997 16:09:07 -0700 (PDT) From: asami@cs.berkeley.edu (Satoshi Asami) To: jin@george.lbl.gov Cc: crb@Glue.umd.edu, freebsd-scsi@FreeBSD.ORG, gary@tbe.net Subject: Re: NCR SCSI controllers Message-ID: <199707122309.QAA10000@silvia.HIP.Berkeley.EDU> In-Reply-To: <199707122240.PAA21522@george.lbl.gov> (jin@george.lbl.gov)
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* Cc: freebsd-hardware@FreeBSD.ORG, freebsd-isp@FreeBSD.ORG, * freebsd-scsi@FreeBSD.ORG, gary@tbe.net Please don't continue crossposting.... * I have no problem with NCR at all. Specially under FreeBSD, It does not take * CPU time. Two disks or 14 disks is not the issue for SCSI controllers. * If you can saturate the SCSI bus with two disks (new tech can), then, putting * 100 disks (assume ID is allowed), would not make any difference at all. You may want to note that there is more to performance than sequential throughput. * Does some one have tested any ultra-wide SCSI controllers to have at least * more than 20 MB throughput over a single controller with number of ultra-wide * disks? I have seen over 30MB/s on one of the channels of an Adaptec 3940UW with 6 or 7 of the newest IBM drives. * I posted such question a few month ago, and did not hear any respond. * I was wondering no one had it worked at that time. Maybe you asked in a wrong list? :) Satoshi
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