Re: 6.2-BETA2 Dell PE1950

From: Scott Long <scottl_at_samsco.org>
Date: Wed, 04 Oct 2006 23:42:12 -0600
Doug Ambrisko wrote:
> Fredrik Widlund writes:
> | An update, right now the BCE nic seems to work, I'm not sure exactly why
> | yet. I'm attaching the dmesg however.
> | 
> | SAS adapter is the PERC 5I, which is handled by the MPT driver in
> | 6.2-Beta2. I'll continue to look at this. There are some unhandled
> | events (0x12, 0x16), but these might not be needed.
> 
> You might be confused here.  PERC stands for "Power Edge RAID Controller"
> which is the LSI RAID card.  It is supported via the mfi driver.  The
> MPT driver supports the non-RAID SAS card.  Okay it can do some RAID
> but really isn't a RAID card like the real RAID card.  I do have a
> card that is the SAS controller but I haven't played with it much.
> I did play with it a little to figure out a different problem and
> now it sits on my desk.
> 
> Doug A.

The confusion is actually on Dell's end.  They've overloaded the 'PERC'
term to mean both software and hardware RAID.  You can build out a
1950 or 2950 with an MPT SAS card instead of an MFI SAS-RAID card, but
they will still tell you that you are getting 'PERC RAID'.  The power
of marketeers.  Anyways, I _think_ that the 'i' in 'PERC 5i' is the
indicator that it is software RAID, and thus just an MPT chip doing
its 'integrated mirror' feature.

Scott
Received on Thu Oct 05 2006 - 03:43:59 UTC

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