"SanDisk's unveiled the new drives at Computex, in Taipei. The SSDs use a common method to store writes in cache memory, waiting until the SSD is in an idle state to then lay them down. The method normally uses DRAM cache memory. SanDisk, however, said their new pSSD P2 and pSSD S2 drives use a new technology called nCache, which instead of DRAM, uses nonvolatile NAND flash memory as a cache to store writes more efficiently before laying them down on the drive."

This is not what e.Digital does.... They are utilizing two solid state entities, one for the long term storage(SSD), the other as a cache for staging data before moving it to the SSD.

e.Digital would not utilize a flash cache, which in this case would have to be sizable, they would manage the process directly on the SSD.

Now the question is, what type of cache is in front of the nCache(flash) allowing the reads and writes into and out of it ?....And how is the data passed form the NCache to the SSD? Keep in mind that flash used in what they call nCache has a limited life span on the bits.

Where they utilize a sizable flash as the cache in place of DRAM....e.Digital utilizes a tiny high speed SRAM having a long life span as the I/O of the flash.

As to...

"waiting until the SSD is in an idle state to then lay them down."

Is a bogus statement....

doni