[1827] in linux-scsi channel archive
Re: Set up RAID over linux
daemon@ATHENA.MIT.EDU (Doug Ledford)
Wed May 7 23:12:59 1997
To: apl@ctv.es
cc: linux-raid@vger.rutgers.edu, linux-scsi@vger.rutgers.edu
In-reply-to: Your message of "Wed, 07 May 1997 09:34:09 -0000."
<199705070730.JAA25562@sandra.ctv.es>
Date: Wed, 07 May 1997 16:43:48 -0500
From: Doug Ledford <dledford@dialnet.net>
--------
> find the main contenders are Adaptec (3985W) and DPT (PM3334). They
> both provide RAID5 support. Do you think it's a good choice? I'm also
The Adaptect 3985W controller does not truly provide hardware RAID support. It supports multiple hardware channels, but the RAID functionality is still done in software (possibly on the card itself lending some credence to the hardware RAID claim, but that requires using the sequencer code from Adaptec, which you don't get under linux, instead you get our sequencer code under linux and it doesn't do any RAID magic on the controller). So, in short, if a true hardware solution is what you wnat, forget about the 3985 controllers and stick to the DPT.
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