HGST 7K4000 is the world's first 4TB 7200 RPM hard drive with a 2.0 million hours MTBF specification and backed by a full 5-year warranty, originally offered with SATA 6Gb/s and now also available with a SAS interface. Ultrastar 7K4000 represents the sixth-generation HGST 5-platter design, which has been field proven by top server and storage OEMs and Internet giants. Engineered for the highest quality, the Ultrastar 7K4000 is put through grueling design tests during development and must pass stringent ongoing reliability testing during manufacturing. Ultrastar 7K4000 delivers by reducing downtime, eliminating service calls and minimizing TCO Industry's leading 4TB capacity in a standard 3.5-inch form factor Industry's best Idle and Active power efficiency (Watts/TB) Reliable, field-proven, 2nd generation HelioSeal process and 7Stac design 2M hours MTBF rating & 5-year limited warranty Advanced format 4Kn and 512e models UPC 726523580262 ASIN B00E7LTBBW Brand Western Digital Color Silver Model Name Ultrastar 7K4000 Form Factor Sas Item Weight 1.8 Pounds Media Speed 150-180 MB/s Manufacturer HGST Model Number 0B26885 BuiltIn Media Internal Hard Drive HardDrive Size 4 TB Number of Items 1 Installation Type Internal Hard Drive Compatible Devices server Data Transfer Rate 6 Gigabits Per Second Enclosure Material Aluminum Additional Features Portable Hard Disk Interface Serial Attached SCSI Warranty Description 5 year limited on parts Hard Disk Description Mechanical Hard Disk Hard Disk Form Factor 3.5 Inches Hardware Connectivity SAS Connectivity Technology SATA Digital Storage Capacity 4 TB Specific Uses For Product personal, gaming, business Hard Disk Rotational Speed 7200 RPM Cache Memory Installed Size 64