Date: Mon, 12 Feb 2007 19:37:48 +1100 From: Peter Jeremy <peterjeremy@optushome.com.au> To: "Daniel O'Connor" <doconnor@gsoft.com.au> Cc: freebsd-stable@freebsd.org Subject: Re: What is a good choice of sata-ii raid controller for freebsd? Message-ID: <20070212083748.GA837@turion.vk2pj.dyndns.org> In-Reply-To: <200702121607.05427.doconnor@gsoft.com.au> References: <00ad01c74b65$79db1710$0c00a8c0@Artem> <200702120940.42167.doconnor@gsoft.com.au> <20070211235138.GA53649@hugo10.ka.punkt.de> <200702121607.05427.doconnor@gsoft.com.au>
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--dDRMvlgZJXvWKvBx Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2007-Feb-12 16:07:03 +1030, Daniel O'Connor <doconnor@gsoft.com.au> wrot= e: >I regularly ship systems overseas where the power fails frequently. The=20 >inability to boot because one disk got hosed is Bad News (tm). A decent UPS can help here. >It depends on your exact situation, I was just pointing out that SW RAID= =20 >doesn't cover all the bases HW RAID does. If the disk is dead then the BIOS will skip it and the system should boot normally (I've tested this by pulling a disk since I didn't have a suitable dead disk to hand). A hard error in the 2nd stage boot loader, ficl or the kernel is definitely the worst case - I agree that this is very difficult for software raid to recover from. Note that even with hardware raid, there are still lots of failure points. The least reliable parts of a current computer are the CPU and PSU fans, not the disks. --=20 Peter Jeremy --dDRMvlgZJXvWKvBx Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFF0Cdc/opHv/APuIcRAtsoAJ9JCaMOgd5DYUPsMQeG6Cak66AU/ACfROPM dDL/LSmXPR1Q/uFm2cuhJBE= =0qTu -----END PGP SIGNATURE----- --dDRMvlgZJXvWKvBx--
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