My complaint about data-compression schemes has been that they were software-based. "Why does an OS offer a data-compression algorithm for one of the Base Functions of an operating system - the File System, the I/O aspects. If the compression algorithm is so great, why not make it the standard for all Read/Writes?"
But having the storage-unit's controller perform this is interesting, although the prospect of doing it 'after the fact - as the need arises" is a bit disconcerting. "Why not do it for all time? From the first byte forward? Er, the first THREE bytes forward?"
And cynically, I see we're once again treated to an "up to three times" issue because this one test only doubles it. Yawn... I can hardly wait until SOME marketing hype actually delivers on their promise. I'd love to see Marketing use "at least twice" instead, and for once, give consumers MORE than the marketing hype claimed.