From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: Large single raid and XFS or two small ones and EXT3? Date: Thu, 22 Jun 2006 12:23:50 -0700 Message-ID: <449AEE46.6050408@zytor.com> References: <449AEB7C.6040108@cjx.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Gordon Henderson Cc: Chris Allen , linux-raid@vger.kernel.org List-Id: linux-raid.ids Gordon Henderson wrote: > On Thu, 22 Jun 2006, Chris Allen wrote: > >> Dear All, >> >> I have a Linux storage server containing 16x750GB drives - so 12TB raw >> space. > > Just one thing - Do you want to use RAID-5 or RAID-6 ? > > I just ask, as with that many drives (and that much data!) the > possibilities of a 2nd drive failure is increasing, and personally, > wherever I can, I take the hit these days, and have used RAID-6 for > some time... drives are cheap, even the 750GB behemoths! > >> If I make them into a single RAID5 array, then it appears my only >> choice for a filesystem is XFS - as EXT3 won't really handle partitions >> over 8TB. > > I can't help with this though - I didn't realise ext3 had such a > limitation though! > 16 TB (2^32 blocks) should be the right number. -hpa