"For enterprise flash there is also additional circuits installed to avoid wearing down a single chip (wear leveling) as well as error detection and correction if a chip should exhibit bit error. There are some other circuitry added outside of the flash chips themselves which further adds to the performance and reliability of the enterprise flash drives."

"There has been some discussion about wear of flash drives. The enterprise flash drives employ wear leveling technology, ensuring that a new bank of flash is written to upon each write so that the wear is evenly distributed across all physical addresses. This is done because flash drives behaves much like EPROM’s, to complete a write the target bank in the flash chip has to be erased prior to being written. Our experience shows that this wear leveling combined with the increased write cycles (number of times a single bank can be erased and written to) is on par or better than what we find in magnetic disk, and in fact our experience with these drives in the real world has been that these types of drives are as or more reliable than traditional magnetic drives."

New bank = an erase block, or an array....

Part of e.Digitals wear leveling involves data structure, they do not have to "erase"(flash) a block(array) prior to writing to it. They optimise across the arrays incrementally triggered.

e.Digital functions at the read/write block and not the erase block(array)

Look at it this way, consider an erase block(array) as a stand alone memory chip, where, within this array are individual read/write blocks. e.Digital has the ability to treat this entity as an individual memory unit having the ability to write to any of the read/write blocks within. They do not have to flash it to concecitivally use it, untill they have written to each read/wite block.

They can do that becasue of their data segement management.

doni