Date: Fri, 4 Feb 2005 12:24:38 +0100 From: Oliver Brandmueller <ob@e-Gitt.NET> To: Rong-En Fan <rafan@csie.org> Cc: scsi@freebsd.org Subject: Re: Problem with mpt(4) and Infortrend RAID Message-ID: <20050204112437.GG4733@e-Gitt.NET> In-Reply-To: <20050204102558.GA2001@svm.csie.ntu.edu.tw> References: <20050204102558.GA2001@svm.csie.ntu.edu.tw>
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Hello. On Fri, Feb 04, 2005 at 06:25:59PM +0800, Rong-En Fan wrote: > 1. set the channel to 160MB/s (sync clock is 80Mhz) This does the trick for me, I discovered that just a few days ago. > 2. map 1 logical drive to 1 channel (I have two channels > on raid) This did not work for me, tried that before. > By the way, if I use 320MB/s and plug the RAID into another > Adaptec 29320LP (ahd(4)), it fails when bus scanning. On the > other hand, 160MB/s is fine. *hehe* I just got me an Adaptec also to test and saw the same. I even installed Linux and tested it and always get the same results: With 320MB/s there are problems. With 160 MB/s there are now problems. FreeBSD-wise I would say: "fixed" (meeaning there was not a problem). > any suggestion about this? Yes, we're gonna talk a little to Infortrend, while buying nice U320 hardware and getting something that does only work as U160 is not nice. For some time I can still live with U160, but when I start upgrading capacities here it will make a difference in the number of SCSI channels needed. Funny, in the Infortrend FAQ you find a lot of "How do I downgrade Controler XXX from 320 MB/s to 160 MB/s", but they never tell you, why you should do that. But reading this you get the feeling, they know about this problem. - Oliver -- | Oliver Brandmueller | Offenbacher Str. 1 | Germany D-14197 Berlin | | Fon +49-172-3130856 | Fax +49-172-3145027 | WWW: http://the.addict.de/ | | Ich bin das Internet. Sowahr ich Gott helfe. | | Eine gewerbliche Nutzung aller enthaltenen Adressen ist nicht gestattet! |
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