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Date:      Sun, 26 Jan 2003 22:46:09 -0400 (AST)
From:      "Marc G. Fournier" <scrappy@hub.org>
To:        freebsd-stable@freebsd.org
Cc:        Scott Long <scott_long@btc.adaptec.com>
Subject:   Adaptec 2120s RAID Controller with 4.7-RELEASE ... alternative?
Message-ID:  <20030126223025.X15704@hub.org>

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Morning all ...

  Today, I installed a new Intel server with a 2120s RAID controller in
it, with the 4.7-RELEASE CDs, only to find out afterwards that there is a
bug (known) in the driver causing it to TIMEOUT on reboot ... know, I know
that Scott knows about it, and is looking into it, based on a posting on
Jan 16th to this list, so this question is two part:

1. has it been fix in recent code?  Will an upgrade to -STABLE (which is
   planned anyway) fix it?  I found a commit since the bug was reported,
on the 23rd ... is this meant to address that problem?

"Work around a bug in the 2200 and 2120 cards that cannot DMA commands
  from the first 8k og physical memory."


2. I doon't know how the Hardware RAID controllers work, but is there an
alternate card that I can put into the machine (ie. the 2110S (U160 vs
U320) that will work, or is this an issue that affects anything using the
aac driver altogether?

Also, how does hardware RAID work?  With vinum, I know that the 'RAID
configuration' is saved on the drive itself ... where is it saved on a
RAID controller?  On the card itself?  If I replace the controller, do I
end up losing all of my configuration?  Or is it simple 'plug in new card
and reboot'?

Thanks ...

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