From owner-freebsd-hardware Wed Dec 19 13:30:41 2001 Delivered-To: freebsd-hardware@freebsd.org Received: from mail.inka.de (quechua.inka.de [212.227.14.2]) by hub.freebsd.org (Postfix) with ESMTP id 93A7D37B416 for ; Wed, 19 Dec 2001 13:30:38 -0800 (PST) Received: from kemoauc.mips.inka.de (uucp@) by mail.inka.de with local-bsmtp id 16GoIP-0007LN-00; Wed, 19 Dec 2001 22:30:37 +0100 Received: (from mailnull@localhost) by kemoauc.mips.inka.de (8.11.6/8.11.6) id fBJLHdQ85999 for freebsd-hardware@freebsd.org; Wed, 19 Dec 2001 22:17:39 +0100 (CET) (envelope-from mailnull) From: naddy@mips.inka.de (Christian Weisgerber) Subject: Re: Drivers for Ultra320 SCSI host adapters? Date: Wed, 19 Dec 2001 21:17:39 +0000 (UTC) Message-ID: <9vr05j$2jv6$1@kemoauc.mips.inka.de> References: <4.3.2.7.2.20011218103037.00e657c0@localhost> Originator: naddy@mips.inka.de (Christian Weisgerber) To: freebsd-hardware@freebsd.org Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Brett Glass wrote: > I've just begun a project in which I'll be testing a hard drive with an > Ultra320 SCSI interface. Trouble is, I don't know of any Ultra320 host > adapter cards which are supported by FreeBSD drivers. Does anyone know of > one? If I run the tests with a slower adapter, I will (of course) not be > able to get maximum performance from the drive. Actually, you should be able to squeeze maximum performance from the drive with a plain U2W (80MB/s) adapter. U160 is way overkill for a single drive, and U320 would be even more so. According to the data sheet, the fastest hard drive IBM currently seems to be shipping has a sustained data rate of 36.6-52.8MB/s: http://www.storage.ibm.com/hdd/ultra/36z15data.htm Other manufacturers can't be far off. -- Christian "naddy" Weisgerber naddy@mips.inka.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message