Date: Tue, 10 Jun 2003 11:27:07 -0700 From: "Luoqi Chen" <lchen@briontech.com> To: "Scott Long" <scottl@freebsd.org> Cc: scsi@freebsd.org Subject: RE: 64-bit raid controller recommendation Message-ID: <AHEKICEOIHLOGINAFIINEEALCBAA.lchen@briontech.com> In-Reply-To: <3EE59CF9.1010809@freebsd.org>
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> Luoqi Chen wrote: > > Hi, > > > > I'm setting up a Supermicro 7043P-8R box with 8G of memory and > > I've just found out that the Adaptec 2010S ZCR card didn't support > > 64-bit addressing (being i2o based). So I'm looking for a card > > that could directly (no bouncing) address at least 8G physical > > memory, does anyone have any recommendation? > > > > It's hard to tell from the asr driver where the 32-bit limitation > comes from and/or if there is a way to fix it. To directly answer > your question, the Adaptec aac cards and driver support 64-bit > addressing with no bouncing. This includes the 5400, 2120, and 2200 > cards. > > Scott > The 32-bit limitation seems to come from the i2o architecture. I've checked with the linux driver, there's no 64-bit support either. The telltale sign is in the marketing literature it is NOT mentioned as IA-64 ready. The Adaptec 2200 sounds like a good fit for my need. How complete is the 64-bit support? Do you have any plan to back port it to -stable? (In)Stability makes me reluctant to install 5.x in a production system. I'm willing to do the back-porting if you don't have time. I've already done quite a few back-porting to be able to use 8G of memory. Thanks -lq
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