Date: Wed, 18 Nov 2009 10:13:52 +0800 From: TJ Varghese <tj@tjvarghese.com> To: Modulok <modulok@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Wester Digital 'deep recovery cycle' and gstripe? Message-ID: <c7f2adc20911171813o5c90bf15o51b3fe5bbd1b6e34@mail.gmail.com> In-Reply-To: <64c038660911171249r141cc810n62a721e48225954c@mail.gmail.com> References: <64c038660911171249r141cc810n62a721e48225954c@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Nov 18, 2009 at 4:49 AM, Modulok <modulok@gmail.com> wrote: > List, > > Has anyone used 'Wester Digital Caviar Black' disks in a gstripe? > > I'm building a 2TB gstripe, from 3x 1TB disks. My concern, is the > disks are 'consumer grade' disks. Western Digital mention not to use > them with a raid controller as they have a potential, 'deep recovery > cycle', which an last up to 2 minutes. This would theoretically result > in them being dropped from the array. Despite this, I've heard > successful uses of these disks via gmirror. (Granted, not the same as > gstripe). Again, in theory, if one disk enters a 'deep recovery cycle' > and is dropped from the array, and during that time another disks does > the same the array is toast, right? > > Umm...what are the odds of this occurring? War stories? (The more I > type this out, the more it's starting to sound like a bad idea.) > Thoughts, ideas? > -Modulok- google for WDTLER.EXE. I've had good results setting the recovery time to 7 seconds on the Caviar Greens & Blacks. FWIH, it only works up for WD drives up to 1TB. WD's Raid Ed. drives have the above setting on by default.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?c7f2adc20911171813o5c90bf15o51b3fe5bbd1b6e34>