Date: Mon, 01 May 2000 18:01:26 -0700 From: Parag Patel <parag@cgt.com> To: dg@root.com Cc: Mike Smith <msmith@FreeBSD.ORG>, freebsd-stable@FreeBSD.ORG Subject: Re: How good is AMI MegaRAID support? Message-ID: <99363.957229286@pinhead.parag.codegen.com> In-Reply-To: Message from David Greenman <dg@root.com> of "Mon, 01 May 2000 17:37:47 PDT." <200005020037.RAA28837@implode.root.com>
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[Re: BSOD and system crashes, UPS and NVRAM] What if the RAID card's onboard software crashes? I don't know enough about these cards to guess at what's more likely - FreeBSD crashing or the onboard card software crashing. If they're about equally likely (or unlikely) then NVRAM vs UPS still seems a wash to me. Wouldn't any crashes that would toast a filesystem under FBSD care if the underlying hardware was RAID or a single disk? Wouldn't it still be toast either way? I can see how a NV write-buffer could speed up write performance, but only if the disk writes are somewhat bursty. It doesn't seem to be very different from disks with large onboard caches. (Which presumably might still require a UPS to ride out crashes.) 'Course if you're talking M$ OSes, then hardware RAID is clearly better. :) (And it's good to hear folks' real-world experiences. Thanks!) -- Parag Patel To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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