Date: Sat, 15 Mar 2008 20:56:17 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Willy Tarreau <w@1wt.eu>
Cc: Daniel Phillips <phillips@phunq.net>,
       David Newall <davidn@davidnewall.com>, linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] Ramback: faster than a speeding bullet
Message-ID: <20080315205617.58aa8965@the-village.bc.nu>
In-Reply-To: <20080315205950.GA13012@1wt.eu>
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	<20080313132211.6af855b3@the-village.bc.nu>
	<200803131214.40321.phillips@phunq.net>
	<20080315205950.GA13012@1wt.eu>
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> RAID controllers do not have half a terabyte of RAM. Also, you are always
> invited to choose between speed (write back) and reliability (write through).

The write back ones are also battery backed properly, and will switched
to write through (flushing out the cache) on the first sniff of a low
battery signal.

The decent ones (the kind used in serious business) also let you swap the
battery backed RAM module to another card in the event of a failure of a
card so you can complete recovery.
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