[BNM] Reliable hard disks

David Pashley david at davidpashley.com
Tue Jun 3 22:00:44 BST 2008


On Jun 03, 2008 at 20:34, andrew holway praised the llamas by saying:
> Does anyone have any data on desktop hard drive reliability. I want to
> replace the 36 GB disks in RAID 0 with something like 2 500GB disks.
> 
RAID0 is a really bad plan if you're after reliability, as the array is
half as reliable as a single drive. RAID 1 with two drives is just under
twice as reliable as a single drive, but wastes half your diskspace.

Google released a paper on hard drivve reliablity some point in the last
couple of years. From what I remember, drives tended to fit into one of
three categories: dead on arrival, failed in the first year, failed
after 5 years. Sadly you don't know which you've bought until it fails.

-- 
David Pashley
david at davidpashley.com
Nihil curo de ista tua stulta superstitione.


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