Date: Mon, 11 Jan 1999 04:42:10 +0000 From: Doug Ledford <dledford@redhat.com> To: byron@mail.ifip.com Cc: AIC7xxx@FreeBSD.ORG Subject: Re: Adaptec 7890 and RAID portIII RAID controller Linux Support Message-ID: <36998122.9566C573@redhat.com> References: <199901110309.WAA24393@duh.f-stopcamera.com>
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byron@mail.ifip.com wrote: > > I am intrested in buying a server and i have been looking at Raid. I have found > a neet motherboard that has dual utra II scsi and a raid portIII the motherboard > specs are at http://www.supermicro.com/PRODUCT/MotherBoards/440GX/S2DGU.htm My > main question is does Linux suport the Raidport III raid cards. And if it does > can you point me where to get more info on suporting it. I am also sligtly > intrested in knowing how much preformance differance there would be between > softtware raid and hardware raid. If any one has alot of experance in this area > with linux and has some time to help me pleas e-mail me a byron@lek.net To sum up my impressions, hardware RAID is a waste of money. It doesn't buy speed any more (it used to when a hot server was a 486/33 and you had an i960 chip on the RAID controller). The newest RAID5 and RAID1 code from Ingo Molnar is *quite* reliable and pretty much on par with what you would get in a hardware raid array. The real reason for raid used to be reliability in the face of failure. Any more, with as reliable as the software has gotten, I consider the hardware raid arrays simply another possible point of failure. I would go software raid if I were you. -- Doug Ledford <dledford@redhat.com> Opinions expressed are my own, but they should be everybody's. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe aic7xxx" in the body of the message
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