From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Turmel Subject: Re: [sucess] upgrading LSI SAS9211-8i fw IR->IT Date: Mon, 6 Nov 2017 16:48:16 -0500 Message-ID: <0eba8116-169e-4ca6-262a-dfcc3c8ed5f9@turmel.org> References: <08feefcc-14d0-e7ec-aa23-927ecbb63ac3@eyal.emu.id.au> <34e5cc74-2cb2-5059-0e11-8f26a8bee223@eyal.emu.id.au> <31706ffc-3a81-b844-261e-a84dd8c01deb@fnarfbargle.com> <20171106201556.C02DA120495@gemini.denx.de> <5006e53f-5df1-df17-732f-73a5a7d3349e@eyal.emu.id.au> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <5006e53f-5df1-df17-732f-73a5a7d3349e@eyal.emu.id.au> Content-Language: en-GB Sender: linux-raid-owner@vger.kernel.org To: Eyal Lebedinsky , list linux-raid Cc: Wolfgang Denk , Brad Campbell List-Id: linux-raid.ids On 11/06/2017 04:38 PM, Eyal Lebedinsky wrote: > On 07/11/17 07:15, Wolfgang Denk wrote: >> Dear Eyal, >> >> In message >> you wrote: >>> >>> (I had many disk failures/replacements in the 4 years life of >>> this array). >> >> Reading this makes me wonder if you checked your environment for >> other influences. there must be some reason for an exceptional >> high number of failures. >> >> I remeber we also had a nighmare of disk errors in the rack in the >> 2nd floor of our building - which disappeared after moving the >> rack into the basement. I can't prove it, but I blame it on >> vibrations. We have a heavy traffic train line less than 50 meters >> away, and disks (classic, magnetic ones) definitely do not like >> vibrations - see [1]. Maybe you have other influences you did not >> check for yet? > > Interesting Wolfgang, > > - This array is at home, a relatively quiet place. - I monitor the > disks temperatures and it is OK. - The machine runs off a UPS which > can be a source of bad power (if the PS does not filter it out). - > The HBA may be somehow bothering the disks? > > The disks are under warranty until late next year so there is time to > see if the disks do better with the LSI. > > BTW, two of the RMAs were for disks that arrived DOA (as RMAs). I do > not have high regard for the WD blacks. The failures were spread > across the last 4 years (so not infant mortality). > > If nothing else, this experience made me comfortable with software > raid, and encouraged me to stick to my backup schedule. That's a really bad failure rate. But they're WD Blacks, which if I recall correctly, do not support scterc. Did you deal with your driver timeouts? If not, those drives probably weren't really dead. Just not raid-compatible out-of-the-box. Phil