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Date:      Tue, 03 Oct 2000 06:48:37 -0400
From:      Mike Tancsa <mike@sentex.net>
To:        Michael DeMutis <mike@2gen.net>, freebsd-stable@FreeBSD.ORG
Subject:   Re: PERC2 RAID support in 4.1-STABLE
Message-ID:  <4.2.2.20001003064505.03578258@mail.sentex.net>
In-Reply-To: <3.0.3.32.20001003021515.01138b00@tristo.netinc.ca>

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At 02:15 AM 10/3/2000 -0400, Michael DeMutis wrote:
>How is the Dell PERC2 RAID support in 4.1-STABLE?
>
>I have a server being delivered in a week and it's running a 2 disk array.
>
>Is this going to be a nightmare to setup?
>
>I'll be installing 4.x from scratch, and I'd like full LVL 5 RAID support.
>The machine has to boot from the RAID device.  Is there a process I should
>follow for installation?

If its the MegaRAID based card (see man amr) nothing special. I imagine the 
new machine will have a fairly recent firmware for the card which matters 
in my experience.  RAID 5 on the card is OK, but if you want speed, I found 
mirrored RAID 0 is a fair bit faster.  Also, note the defaults used when 
making the stripe set. Depending on your situation, its not necessarily 
what you want.

There was a time when the card would give grief under high disk load, but 
this appears to have been fixed now.

         ---Mike
--------------------------------------------------------------------
Mike Tancsa,                          	          tel +1 519 651 3400
Network Administration,     			  mike@sentex.net
Sentex Communications                 		  www.sentex.net
Cambridge, Ontario Canada			  www.sentex.net/mike



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