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Re: What is the point of RAID?



Boyd Stephen Smith Jr. wrote:
On Wednesday 12 November 2008, Mark Allums <mark@allums.com> wrote about 'Re: What is the point of RAID?':
Age matters.  Drive either fail in the first 60 days, or last for the
full length of the design life.  Except when they don't.

As mentioned else where in the thread. This is an urban legend. Actual studies of large number of hard drives showed no "infant mortality rate" or "bathtub curve" which regards to failure rates.

As a drive ages it's chance of failure steadily increases.

Actually, I was being subtle. "Except when they don't" means, it really doesn't happen that way.

Age matters, the older it is, the more likely it is to fail. There is a "planned obsolescence" on many consumer items, e.g. automobiles, cell phones, mp3 players. This is what I failed to say in the Asus/motherboard thread, if you read any of that.

However, apparently, it doesn't appear to (yet) exist for drives. No "bathtub curve", as you say. Probably the reason why is that the push for ever-larger storage capacities has obviated the need. I expect manufacturers will get around to planned obsolescence for storage in due course.

Mark Allums


(Please ignore the other message I sent.  Was sent by mistake.)


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