DELL Compellent SCv3020, 4.2 TB, HDD, Serial Attached SCSI (SAS), 2.5", Rack (3U), Black, Silver DELL Compellent SCv3020. Total installed storage capacity: 4.2 TB, Installed storage drive type: HDD, Storage drive interface: Serial Attached SCSI (SAS), Storage drive size: 2.5". Chassis type: Rack (3U), Device class: Large Enterprise Business. Number of storage drives supported: 30, Supported storage drive types: HDD, Storage drive sizes supported: 2.5". Width: 17.5" (445 mm), Depth: 30.8" (782.7 mm), Height: 5.25" (133.4 mm). Product color: Black, Silver