More flash than a photography convention
Nexenta and SanDisk are integrating the latter's dense InfiniFlash JBOF with the former's NexentaStor to build a half-petabyte-in-3U all-flash array starting at $1.5/GB raw. At these prices disk may not be dead, but it's heading for the mortician's parlor.
Tegile has an IntelliFlash product using the same hardware, and says it costs about $0.50 effective GB. Tegile assumes a 3:1 data reduction rate, which gets us to $1.5/GB raw, simplistically speaking.