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 Lifetimes of HDD and SSD

Lifetimes of the HDD unit and the SSD unit are as follows:


The lifetime of the HDD unit is whichever of the followings comes first:

5 years
20,000 operating hours
600,000 cycles of head loading/unloading


The expected lifetime of the SSD unit based on the number of writes can be calculated with the following formula.

The expected life time when writing 512 MB of data once per minute is approximately 6 years.
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