Date: Sun, 31 Dec 2000 16:36:40 +0100 From: Andre Albsmeier <andre.albsmeier@mchp.siemens.de> To: "Michael C . Wu" <keichii@peorth.iteration.net> Cc: ppX <c4@worldclass.jolt.nu>, freebsd-hardware@FreeBSD.ORG Subject: Re: SCSI choice Message-ID: <20001231163640.A64240@curry.mchp.siemens.de> In-Reply-To: <20001230141641.A46004@peorth.iteration.net>; from keichii@iteration.net on Sat, Dec 30, 2000 at 02:16:41PM -0600 References: <Pine.BSF.4.21.0012302023210.67739-100000@worldclass.jolt.nu> <20001230141641.A46004@peorth.iteration.net>
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On Sat, 30-Dec-2000 at 14:16:41 -0600, Michael C . Wu wrote: > On Sat, Dec 30, 2000 at 08:48:17PM +0100, ppX scribbled: > | I am wondering what scsi card i should choose. > | We will soon be getting 10 73gig scsi drives which will be raided and i am > | wondering which card has the best performance / stability in FreeBSD 4.1 > | > | The drives are IBM's Ultrastar 73LZX 73.4GB and should be > | utilizing a card with Ultra320 SCSI support. > > Tekram Ultra160/320 cards (LSI/Symbios chipset) work better than Adaptec. > They have so-called "LOAD/STORE-based firmware" and actually > go up to 160/320 in FreeBSD. The author actually wrote both the Linux > sym0 and the FreeBSD sym0 driver. I believe he should know the card well. > Good job Gerard! :) > > I personally have > > I do not know if ahc has this fixed yet, but the ahc(4) says: > > Double Transition clocking is not yet supported for Ultra160 controllers. > This limits these controllers to 40MHz or 80MB/s. > [You can read on in the man page to see why I do not like the driver.] Well: andre@server:~>uname -a FreeBSD server.ofw.tld 4.2-STABLE FreeBSD 4.2-STABLE #3: Sun Dec 10 08:28:46 GMT 2000 root@bali.ofw.tld:/src/obj-4/src/src-4/sys/server i386 andre@server:~>grep ahc0 /var/run/dmesg.boot ahc0: <Adaptec 29160 Ultra160 SCSI adapter> port 0xd000-0xd0ff mem 0xdf000000-0xdf000fff irq 15 at device 9.0 on pci0 andre@server:~>grep da2 /var/run/dmesg.boot da2 at ahc0 bus 0 target 2 lun 0 da2: <IBM DDYS-T36950N S93E> Fixed Direct Access SCSI-3 device da2: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing Enabled da2: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C) Works great after upgrading the fw of the IBM drive. Don't know about 320... -Andre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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