LaCie finally delivered its long-promised first Thunderbolt device in the Little Big Disk. The drive is hand-portable but has enough headroom in the 10Gbps connection to supply a Mac with speed well beyond what FireWire can do. With a 240GB SSD RAID striped option, it can peak up to 634MB per second in read speeds and up to 870MB per second when two drives are daisy chained together.