Date: Wed, 15 Nov 2000 11:28:07 -0500 From: Chuck O'Donnell <cao@bus.net> To: Dan Langille <dan@langille.org> Cc: freebsd-scsi@freebsd.org Subject: Re: Adaptec 2940U2W/2940U3W vs 29160 Message-ID: <20001115112807.C98905@bus.net> In-Reply-To: <200011150515.SAA24121@ducky.nz.freebsd.org>; from dan@langille.org on Wed, Nov 15, 2000 at 06:15:28PM %2B1300 References: <200011150515.SAA24121@ducky.nz.freebsd.org>
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On Wed, Nov 15, 2000 at 06:15:28PM +1300, Dan Langille wrote: > I have two SCSI Ultra160 drives but have yet to decide upon an adapter. > The box is a dual XEON and those disks will be the only drives. The > box is destined to be a high end workstation in the short term (it might > wind up being a server). > > Given that I have only two drives, I've been told that the 39160 would be > overkill > > Similarly, I've been told that that if the U3 card wasn't much more than > the U2, then go for the U3. Otherwise, it's not worth it given that I'm > using only two of those drives. The point being that you need large > numbers of those disks to take advantage of U3. > > Given I'm going to start with FreeBSD 4.1.1 on the box, what would you > recommend in terms of what card to use? I can't speak in terms of hard numbers on performance, but if you're looking for general input... We recently bought a new box and tried to get one of the 2940U2W cards, which have always worked beautifully for us. We were not able to find one around and an Adaptec rep seemd to indicate that the 29160 was the replacement. So, we bought a 29160 and it's working fine under the 4.1R GENERIC kernel. Good luck, Chuck -- uname -a : FreeBSD milf30.bus.net 4.1-RELEASE FreeBSD 4.1-RELEASE #0: Fri Jul 28 14:30:31 GMT 2000 jkh@ref4.freebsd.org:/usr/src/sys/compile/GENERIC i386 selective lines from dmesg: ahc0: <Adaptec 29160 Ultra160 SCSI adapter> port 0x6100-0x61ff mem 0xe0805000-0xe0805fff irq 11 at device 19.0 on pci0 da0 at ahc0 bus 0 target 0 lun 0 da0: <SEAGATE ST39236LWV 0010> Fixed Direct Access SCSI-3 device da0: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled da0: 8761MB (17942584 512 byte sectors: 255H 63S/T 1116C) da1 at ahc0 bus 0 target 1 lun 0 da1: <SEAGATE ST318436LWV 0010> Fixed Direct Access SCSI-3 device da1: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled da1: 17522MB (35885168 512 byte sectors: 255H 63S/T 2233C) da2 at ahc0 bus 0 target 2 lun 0 da2: <SEAGATE ST318436LWV 0010> Fixed Direct Access SCSI-3 device da2: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled da2: 17522MB (35885168 512 byte sectors: 255H 63S/T 2233C) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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