hybrid drives - with 1GB memory and a hard disc-

The Mcell is an interesting beast. In terms of size, it fits in the standard 3.5" form factor, but inside it actually contains a 2.5" 5400rpm hard drive, a stick of 1GB DDR2 RAM,
http://arstechnica.com/news.ars/post...ram-cache.html

japanese site:
http://www.estoragenetworks.co.jp/cg...?cat=DTS&pro=0
english pdf:
http://www.estoragenetworks.co.jp/pd...og_english.pdf