Actidata actiNAS12000 4.5TB. Total storage capacity: 4500 GB, Hard drive capacity: 750 GB, RAID levels: 0, 1, 5, 6, 10, 50, JBOD. Memory type: DDR2, Maximum internal memory: 8 GB, Maximum internal memory: 8192 MB. Processor family: Intel Xeon, Compatible processor series: Xeon. Operating system installed: Windows Storage Server 2008. Width: 430 mm, Depth: 610 mm, Height: 132 mm