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Open Source and information security mailing list archives
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Date: Sat, 15 Mar 2008 13:25:48 -0800 From: Daniel Phillips <phillips@...nq.net> To: Alan Cox <alan@...rguk.ukuu.org.uk> Cc: Willy Tarreau <w@....eu>, David Newall <davidn@...idnewall.com>, linux-kernel@...r.kernel.org Subject: Re: [ANNOUNCE] Ramback: faster than a speeding bullet On Saturday 15 March 2008 13:56, Alan Cox wrote: > > 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. In other words, exactly how ramback works. > 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. Right, just like the Violin 1010, whose PCI-e cable can be hotplugged into a different server. Or plugged into two servers at the same time, because each 1010 has two PCI-e interfaces, so this can be done without manual intervention. See, we really are talking about the same thing. Except that ramback does it bigger and faster. Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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