Wester Digital 'deep recovery cycle' and gstripe?
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- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Wester Digital 'deep recovery cycle' and gstripe?
Modulok 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- YMMV, but. In the past I have not had good luck with Western Digital disks, they are 'consumer grade'. It has been my experience that Seagate drives hold up better. My $0.02 Josef -- Josef GroschEmail : jgro...@es.net Computer Systems Engineer Office : 510-486-6597 Lawrence Berkeley National Laboratory Cell : 510-207-9976 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Wester Digital 'deep recovery cycle' and gstripe?
On Tue, Nov 17, 2009 at 2:49 PM, Modulok modu...@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- In a stripe, if one goes it all goes. However I am not certain it's an issue in your case, the gstripe labeling mode with create a persistent config. If there's not a better answer, best thing to do would be to test it out. setting up gstripe takes like 10 minutes. -- Adam Vande More ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Wester Digital 'deep recovery cycle' and gstripe?
Correction, it would be a graid3 setup. Sorry. -Modulok- On 11/17/09, Adam Vande More amvandem...@gmail.com wrote: On Tue, Nov 17, 2009 at 2:49 PM, Modulok modu...@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- In a stripe, if one goes it all goes. However I am not certain it's an issue in your case, the gstripe labeling mode with create a persistent config. If there's not a better answer, best thing to do would be to test it out. setting up gstripe takes like 10 minutes. -- Adam Vande More ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Wester Digital 'deep recovery cycle' and gstripe?
On Wed, Nov 18, 2009 at 4:49 AM, Modulok modu...@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. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
