DS5000
"STEC's 2-bit ZeusIOPS MLC (multi-level cell) flash will be supplied for the high-end DS8800, DS8700 Turbo, and Storwize V7000 storage, but not for IBM's DS5000 arrays. Maybe this s a "not yet" rather than a "not ever", as the DS5000 range does support SSD (solid state drive) use."
DS5000 are re-branded LSI products. It's not IBM's decision.