From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 10 Jan 2001 19:54:40 -0500 From: zoo1@corecomm.net Message-ID: <20010110195439.A11865@bar.nowhere> References: <3A57B052.FA0DFBB2@wrkhors.com> <0101090031381K.05036@lyta> <3A5AAF8C.305C862D@wrkhors.com> <01011001391323.05036@lyta> Mime-Version: 1.0 In-Reply-To: <01011001391323.05036@lyta>; from russell@coker.com.au on Wed, Jan 10, 2001 at 01:39:13AM +1100 Subject: [linux-lvm] hard drive shock tolerance Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-lvm@sistina.com On Wed, Jan 10, 2001 at 01:39:13AM +1100, Russell Coker wrote: [...] >My "gut feeling" is that drives are more susceptible to damage now. I know >of cases of older 3600rpm drives being dropped, being hit by a car while >operating (car entered building through the wall of the computer room), and >suffering numerous other mechanically damaging events without data loss. I >belive that modern 10K rpm drives are not as solid. speaking as someone who has personally dropped (and destroyed) 36GB 10K rpm SSA disk drives, i can attest that modern-day disks are sensitive. those disks i mentioned fell about 20-30cm onto concrete, and were toast. (in all fairness, other identical drives that fell right with them survived, so that shock must have been just on the boundary. i ended up avoiding the blame, due to the unreasonable and careless way the disks had been packaged and shipped - which was lucky for me, genuine IBM disks of this type cost around $1600 USD apiece...) hit by a car? you're serious? i can't even imagine a modern disk surviving that! i've seen 9GB SCSI disks destroyed by an approximately 60cm drop onto wooden benchtop, covered with a (thin) antistatic rubber mat; that wasn't me dropping those, though - about $800 apiece, IIRC... >Also drives are more susceptible to heat problems. 3600rpm drives >could operate with all their air-holes blocked and while surrounded by >other hard drives without problems. You can't stack two new 10K rpm >drives without good fans. i'll take your word for it. myself, i never see drives like that in PCs, just in workstations and RAID arrays with more than adequate cooling; but then again, i don't see PCs much these days anymore. -- PGP/GnuPG key (ID 1024D/BFE0D6D0) available from keyservers everywhere "Everything I am today, I owe to people whom it is now too late to punish."