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Disk will be obsolete before it wears out
You've got overprovisioning, wear-levelling and huge write-optimizing cache built into the drive. With this there's no weak spot in the drive that would wear out quicker than the rest of the drive, so the drive won't fail when first flash cell fails, but only after last spare fails.
Flash cells have between 10-100K write cycles, so with 128GB of cells that's 1.2 to 12 PETABYTES of written data that the drive can handle. Seriously, if you used 2mbit broadband, all piped straight to cache, 24h a day, for TEN YEARS non-stop you would only use 6% of lowest estimate of drives endurance. I really wouldn't be worried about longevity of modern flash drives. Yes, they have finite lifetime, but so do spinning platters, heads and motors in HDD. I actually trust SSD more, as worn-out flash just becomes read-only, and doesn't have risk of catastrophic mechanical failures of spinning drives.
Disk will be obsolete before it wears out
You are probably right about not being too concerned, but, of course when the drive fills up gradually the calculations is not correct anymore. The drive can do wear-leveling on a ever shrinking part of the SSD (say 60 GB of a 120GB drive).
Disk will be obsolete before it wears out
Physical block allocation is not exposed to the OS, so the drive is free to swap contents of blocks in order to start saving to newest ones (although I'm not sure if OCZ controllers are smart enough to do that). |
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