[mythtv-users] The Bigger... Disk contest, Fall 2007 edition

David Brodbeck gull at gull.us
Thu Oct 18 19:22:47 UTC 2007

On Oct 18, 2007, at 11:41 AM, Jay R. Ashworth wrote:

> On Thu, Oct 18, 2007 at 10:38:29AM -0700, David Brodbeck wrote:
>> BTW, I just looked at Seagate's site and there's NO difference in
>> MTBF between Barracuda serially-attached-SCSI and SATA disks.  MTBF
>> for the Cheetah SAS drives is slightly higher.  (They don't make a
>> Cheetah SATA drive.)  They don't quote MTBF for their desktop-class
>> drives.  But what's really interesting is that *all* of these drives
>> have the same 5-year warranty.  Since they don't quote service life,
>> I'm guessing the warranty is probably the best indicator of how long
>> they really think these drives will last.
> Yeah, but as I note whenever this comes up, duty cycle is an issue:
> some MythTV users are running their drives in a duty cycle *much*
> closer to server than desktop, and those desktop drives may last 5
> years... but not at 100% duty 24/7.
> The SCSI drives will; I've done it.

Fair enough, but I don't think valid anymore to assume SCSI = "server  
class" and non-SCSI = "desktop class."  The Seagate Barracudas have a  
24x7 duty cycle, whether they're SAS or SATA.

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