Dell 4TB SAS 7.2k 3.5" 12G Hard Drive 25N64 Increase the storage capacity of your server with this 4TB SAS hard drive from Dell. Featuring SAS interface, this drive offers a good rotational speed, providing fast disk access. Specifications Manufacturer: Dell Model Number: 25N64 Product Type: Hard Disk Drive Capacity: 4TB Rotational Speed: 7200RPM Form Factor: 3.5 Inch Interface: SAS 12Gb/s Warranty: 1-Year Shipping: Free (2-3 days USA)