From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Marcin M. Jessa" Subject: Re: Green drives and RAID arrays with partity Date: Mon, 26 Sep 2011 00:21:10 +0200 Message-ID: <4E7FA956.9000501@yazzy.org> References: <4E7F0A31.4070001@yazzy.org> <4E7F13E8.4080606@hardwarefreak.com> <4E7F3A80.7010308@yazzy.org> <4E7F40A4.6040704@hardwarefreak.com> Reply-To: lists@yazzy.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4E7F40A4.6040704@hardwarefreak.com> Sender: linux-raid-owner@vger.kernel.org To: stan@hardwarefreak.com Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 9/25/11 4:54 PM, Stan Hoeppner wrote: > Are the drives screwed into the case's internal drive cage? Yes. >Directly > connected to the motherboard SATA ports with cables? Yes. I've 6 SATA3 ports on the motherboard and the drives are connected directly. >Or, do you have the > drives mounted in any kind of SATA hot/cold swap cage? The cheap ones of > these are notorious for causing exactly the kind of drop outs you've > experienced. Post a link to your case and any drive related peripherals. I don't have a hot/cold swap cage. This is my case: http://www.fractal-design.com/?view=product&category=2&prod=54 > Did you suffer a power event? I.e. a sag, brown out? No, nothing like that. >Is the system > connected to a good quality working UPS? It is connected to an UPS but not an expensive one. > Something else you should always mention: How long did it all "just > work" before having problems? A few hours? Days? Weeks? Months? Two of the drives were falling out of the array pretty often. My motherboard has a built in RAID controller which I do not use. To begin with the BIOS settings were set to recognize drives as IDE resulting in two of the drives connected to SATA 1 and SATA 2 ports were failing and dropping off the array. They would show as UDMA/100 drives whereas the other drives were showing as SATA link up 6.0 Gbps (SStatus 133 SControl 300) ATA-8: ST2000DL003-9VT166, CC32, max UDMA/133 I changed this BIOS setting and all the drives have been recognized as the same with the same speed. I also bought new SATA cables for the failing drives, specifically for SATA 3. That did not help and the drives kept on failing (maybe once a week?). These 2 drives always failed at about the same time. Shortly after a 3rd. drive failed leaving me with a broken Raid array. >Had you > made any hardware changes to the system recently before the failure > event? No, there were no changes. If so what? Did you upgrade your kernel/drivers recently, or any > software in the storage stack? Is the PSU flaky? How old is it? A flaky > PSU can drop drives out of arrays like hot potatoes when there is heavy > access and thus heavy current draw. The PSU should be fine. I pulled it off a working server which had been stable for long time. -- Marcin M. Jessa