From mboxrd@z Thu Jan 1 00:00:00 1970 From: hansbkk@gmail.com Subject: Re: looking for advice on raid drives upgrade Date: Thu, 31 Mar 2011 13:54:34 +0700 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Vincent Schut Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Wed, Mar 30, 2011 at 6:22 PM, Vincent Schut wrote: >> If you have a bad block anywhere on the degraded drives, you're going to >> lose data. >> > Exactly. A risk I'd like to avoid, of course. IMO you should definitely go to RAID6 with such large drives, IMO with a hot spare as well. The recovery process takes *so* long, it's very likely that a second drive will fail during that vulnerable window and poof. Use the money you're saving on per-GB costs these days to buy yourself a bit more redundancy, otherwise what's the point of using RAID at all eh? Of course if the data is getting frequently archived to well-tested backups, or is otherwise easily replace or of little value (e.g. video collection) then the extra cost might not be worth it to you. Just don't underestimate the geometric increase in risk by going to bigger and bigger size drives.