Once written it can’t be overwritten!

November 4, 2014

The Program Erase Cycle.

It is true that once a block of data has been written to a Flash drive that it can’t be overwritten, it must be erased first before it can be written to again. This sequence of writing, erasing, and then writing again is known as the Program/Erase cycle. The Program/Erase cycle can serve as a criterion for quantifying the endurance of a flash storage device, it also has another name – Write endurance.

HP Enterprise SSDs are available in four categories based on their Write endurance: Performance, Mainstream, Light, and Value. Choosing which is right for you is generally based on the ‘typical workload’, that is the type of use i.e. high read / write applications require Performance, mixed read / write applications for Mainstream or Light and high read / low write applications for Value.

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