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Wear Levelling effects on MTBF

Posted by: Administrator on May 21, 2007 06:06 AM

Recently I read an <a href="http://www.engadget.com/2007/03/13/sandisk-intros-2-5-inch-32gb-ssd-hard-drive/" title="engadget.com">article </a engadget.com>on a SanDisk 2.5" 36GB SSD and I was curious about how the Wear Levelling would affect a device such as this?
I am assuming that the Wear Levelling will reduce the MTBF of the disk and generally, it would be less reliable than spindled disks.



Of course the great attraction for SSD is the reduced power consumption - and the potential scaleabilty in disk arrays. Implementing SSD's in disk arrays with RAID options could improve reliability or rather recoverability from the effects of Wear Levelling. Although, I have not seen any disk arrays populated with SSD's yet.

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