From owner-freebsd-hardware Thu May 1 14:18:22 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id OAA17769 for hardware-outgoing; Thu, 1 May 1997 14:18:22 -0700 (PDT) Received: from george.lbl.gov (george-2.lbl.gov [131.243.2.12]) by hub.freebsd.org (8.8.5/8.8.5) with SMTP id OAA17757 for ; Thu, 1 May 1997 14:18:17 -0700 (PDT) Received: (jin@localhost) by george.lbl.gov (8.6.10/8.6.5) id OAA10970 for hardware@freebsd.org; Thu, 1 May 1997 14:15:34 -0700 Date: Thu, 1 May 1997 14:15:34 -0700 From: "Jin Guojun[ITG]" Message-Id: <199705012115.OAA10970@george.lbl.gov> To: hardware@freebsd.org Subject: 53C875 UW SCSI-3 adapter Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Under both 2.1.7 and 2.2.1, the 53C875 ultra-wide SCSI-III host adapter, made by J Bond Computer Systems (JDC5075), has the same performance as the 53C825, which is just a wide SCSI host adapter, about 18 MBytes/sec. The disk drive I used are Seagate BARRACUDA 9 (ST19171W) , which seagate claims that can go 40 MBytes in sychronous-transfer mode. Has someone experimented the throughput of 53C875 ultra-wide SCSI-III host adapter with any wide or ultra-wide drives? -Jin