From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jim Paris Subject: Re: Busted disks caused healthy ones to fail Date: Tue, 14 Dec 2004 16:49:46 -0500 Message-ID: <20041214214946.GA23973@jim.sh> References: <200412141523.iBEFN4909947@www.watkins-home.com> <41BF4967.9000801@wasp.net.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <41BF4967.9000801@wasp.net.au> Sender: linux-raid-owner@vger.kernel.org To: Brad Campbell Cc: Guy , comsatcat@earthlink.net, linux-raid@vger.kernel.org List-Id: linux-raid.ids > It's not that hard. > I have 4 drives loaded in the rear bays and 2 x 5 Way SATA Hotswap bays in > the 6 front 5.25 inch bays. 14 Drives. And yes, they are on a single 420w > PSU along with the motherboard, Athlon XP 2600+. and 5 80mm fans. Not much > else though. !!!!!! Holy crap! Let's pick a random typical hard drive, a Seagate 120GB SATA: http://www.mittoni.com.au/catalog/product_info.php/products_id/1690 It lists maximum current draw as 2.8 A on the +12V line. Multiply that by 14 drives and we get __39.2 amps__. Now let's pick a random 420W power supply: http://www.newegg.com/app/viewproductdesc.asp?submit=Go&description=N82E16817103445 Note how it's +12V output is rated for only __15 amps__. Your numbers might differ a bit. But it is NO surprise that your drives are failing. The surprising part is that they and your power supply have worked this long. -jim