From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roy Sigurd Karlsbakk Subject: Re: Use RAID-6! Date: Wed, 17 Apr 2013 19:27:18 +0200 (CEST) Message-ID: <32292886.12.1366219638178.JavaMail.root@zimbra> References: <516DABF2.5050409@tigertech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <516DABF2.5050409@tigertech.com> Sender: linux-raid-owner@vger.kernel.org To: Robert L Mathews Cc: Linux RAID List-Id: linux-raid.ids > I personally don't even trust RAID 6. All our servers use three-disk > RAID 1 setups, with disks from at least two different manufacturers t= o > prevent against firmware bricking (although this is becoming more and > more difficult as the industry consolidates). You can *never* trust RAID alone. Even with ZFS, you can have problems = taking down a whole pool, even with RAIDz3 and ZFS' checksumming. A pow= er surge can take down half (or even all) the drives in the array, and = even with three-way mirrors, the chances are good your pool will die. So, choose something decent, like RAID-6 (RAIDz2) or mirrors, three-way= if you're paranoid, and keep a good backup, preferably offsite and on = tape. Tapes in a tape library can't be damaged much of a power surge (e= xcept perhaps those in the reader). Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 roy@karlsbakk.net http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt.= Det er et element=C3=A6rt imperativ for alle pedagoger =C3=A5 unng=C3=A5= eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilf= eller eksisterer adekvate og relevante synonymer p=C3=A5 norsk. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html