No PERC4 for PowerEdge 2650?
Kevin.Merritt at messagerite.com
Sun Apr 25 22:25:00 CDT 2004
I too am interested in others perspectives on software vs. hardware
RAID, but thought that I would share that for whatever reason, you can
only order a 2650 with a PERC/3 from the small business "side" of Dell's
site, but you can configure a 2650 with PERC/4 from the medium-to-large
business side. Alternatively, you can configure a 2650 from the small
biz side with no PERC card and then add a PERC/4 from "Software and
In our experience, no matter what else you do, you should avoid the
PERC/3. It simply under-performs, even relative to software RAID.
> -----Original Message-----
> From: linux-poweredge-admin at dell.com
> [mailto:linux-poweredge-admin at dell.com] On Behalf Of James Thornton
> Sent: Sunday, April 25, 2004 6:46 PM
> To: linux-poweredge at dell.com
> Subject: No PERC4 for PowerEdge 2650?
> I am considering a PowerEdge server for a Web database
> application running Redhat Enterprise Linux 3, and I want to
> run RAID 10 so the PowerEdge 1750's three disk limit
> eliminates it as an option.
> I have been reading that the PERC4 controllers perform much
> better than the PERC3 controllers, but it appears that PERC4
> isn't available via the online configuration utility for the
> PowerEdge 2650; however, it is available for the PowerEdge
> 1750. The 2650 specifications say that the PERC4-DC
> controller is available so why isn't it an option in the
> online configuration utility?
> From what I have read in these forums, it appears that
> software RAID on Linux performs better than hardware RAID for
> reads and almost as good for writes, but you have to manually
> execute some commands before you can hot swap a drive. Does
> the Dell RAID monitoring still work with all the features if
> you run SW RAID instead of HW RAID? Are there other drawbacks
> to running software RAID vs hardware RAID with the
> PERC3/PERC4 controllers?
> James Thornton
> Internet Consultant, http://jamesthornton.com
> Linux-PowerEdge mailing list
> Linux-PowerEdge at dell.com
> Please read the FAQ at http://lists.us.dell.com/faq or search
> the list archives at http://lists.us.dell.com/htdig/
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