possible issues with Dell/Perc5 raid
tom at tomjudge.com
Fri May 11 14:59:45 UTC 2007
Randy Schultz wrote:
> On Fri, 11 May 2007, Tom Judge spaketh thusly:
> -}> --
> -}From the boot messages you have included below it seems that you have a Dell
> -}SAS-5i (Internal PCIe) controller and not a Perc/5[ie].
> Tnx Tom. Yeah I knew that but didn't catch it in the Subject: The perc/5 is
> on another machine.
> -}The SAS-5 known to have very poor performance (1Mb/s 100%busy) under certain
> -}loads (cvsup).
> Hmm. Did not know that.
> Since I have a second machine just like this one, I also think I'm going to
> try pulling out the SAS 5i card and going with a software mirror package like
> gvinum or gmirror. Given the #'s Bill Moran posted and the horrible #'s you
> list above, this may be a viable option.
I have 6 boxes with the SAS5i controller in them so far we have replaced
2 of the controllers with Areca PCIe controllers. However I have yet
to test the performance of them (they are supposed to be very good).
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