Synology RXD1219sas. Total installed storage capacity: 0 TB. Device class: Small & Medium Business. Number of storage drives supported: 12, Supported storage drive types: HDD & SSD, Supported storage drive interfaces: SAS, SAS-2, SAS-3, Storage drive sizes supported: 2.5,3.5". Width: 19" (482 mm), Depth: 28.5" (724 mm), Height: 3.46" (88 mm), Weight: 40.1 lbs (18.2 kg). Product color: Black, Gray