Space or speed? I guess you don’t really need to choose anymore, so long as price is no object. For instance, you can take a look at the new Optimus solid state drive from Smart Modular Technologies. This “Enterprise Grade” drive uses a native Serial Attached SCSI (SAS) interface for up to 6Gb/s. The kicker? You can get up to 1.6TB of usable capacity and it will cost a small fortune.