Date: Fri, 25 Sep 2009 22:58:18 -0400 (EDT) From: Charles Sprickman <spork@bway.net> To: Scott Long <scottl@samsco.org> Cc: freebsd-scsi@freebsd.org Subject: Re: Dell/LSI RAID controllers Message-ID: <alpine.OSX.2.00.0909252243270.15307@hotlap.local> In-Reply-To: <E8474B7F-F075-4B8C-9A4B-424025E2BA69@samsco.org> References: <alpine.OSX.2.00.0909240105580.15307@hotlap.local> <E8474B7F-F075-4B8C-9A4B-424025E2BA69@samsco.org>
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On Thu, 24 Sep 2009, Scott Long wrote: > On Sep 23, 2009, at 11:12 PM, Charles Sprickman wrote: > >> Hello all, >> >> I'm considering a Dell, specifically the Poweredge 2970, and I'm not >> finding much info on their site about the various raid controller options - >> there don't seem to be any actual specs. >> >> Anyone here familiar with the various models (PERC 5i, PERC 6I, SAS 6/iR) >> and what FBSD driver each one uses? All are within my price range. I >> assume all can handle SATA as well as SAS, correct? Is performance in the >> ballpark of a $500 3Ware or Areca card? >> >> Thanks, >> > > Dell hardware works well and is well supported. That's good to know. Before I hit the Dell site, I was looking at barebones Supermicro servers (and some others) and Dell beat the "build it yourself" price by a wide margin. Currently there's a $460 discount on the 2970. > SAS5/6 means that it's a SAS+SATA controller that does basic RAID0 and > RAID1. PERC5/6 means that it's a full-fledged caching RAID controller. > There is even a management tool for both the SAS5/6 and PERC5/6 > controllers. Does Dell bother documenting this stuff anywhere? I find their website barely usable (both in terms of response time - awful and organization - also awful). Does the SAS6 do mirror+stripe? Is the management tool something that requires the whole boatload of Linux compat stuff or is it something simple like "mptutil"? Lastly, I see the PERC6 is about $300 beyond the "integrated" SAS6ir. What more does the PERC version offer? Google is showing me some people calling the non-PERC "quasi-raid" which worries me... Thanks, Charles > Scott >
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