NOTE: These HDD is used by Datacenter Servers for about 3 Years period. HDD was refurbished and data wiped with DoD standard. It's fully tested & passed HGST factory diagnose software test. Since this is heavy duty enterprise HDD with a 2.5M-hour MTBF rating. We are confidence that to honor another 5 Years Warranty for these hard drives. Buy with confidence & worry free! | 8TB, 128MB Cache, 7200RPM, SATA III 6.0Gb/s - Designed for 24/7/365 Heavy Duty, 2.5M-hour MTBF | Works for Any SATA Server, NAS (network storage), RAID, PC/Mac, CCTV DVR, Surveillance System, CCTV DVR | Bare Drive Only, Single Pack, (No Screws, Cables or Accessories included) -Friendly Reminder- Please FORMAT HDD on system in order to be detected/shows on system. | 5 Year Warranty from Reseller, Worry free Return! 100% Full Refund

HIGH CAPACITY AND EFFICIENCY - Can store up to 600GB of data while spinning at 15,000 RPM. | DATA DURABILITY AND SECURITY - Conform to the Trusted Computing Group’s Enterprise A Security Subsystem Class encryption specification. Now, customers can reduce costs associated with drive retirement and extend drive life by enabling repurposing of drives. | HGST QUALITY AND RELIABILITY - Extends the company’s long-standing tradition of performance and reliability leadership. A balanced combination of new and proven technologies enables high reliability and availability to customer data. | ULTIMATE PERFORMANCE - Sequential performance increased by 23% compared to prior generation to keep data moving faster. | ADVANCED POWER MANAGEMENT - Enables multiple idle modes in order to optimize power usage and save even more on energy costs.

Device Type: Hard drive - internal| Capacity: 4 TB| Form Factor: 3.5 x 1/3H| Interface: SATA 6Gb/s| Buffer Size: 64 MB| Bytes per Sector: 512| Features: Load/unload technology, Rotational Vibration Safeguard (RVS), Thermal Flyheight Control (TFC), Enhanced Availability (EA) for 24x7 access to data, Advanced Format technology, SMART Command Transport (SCT), Dual Stage Actuator (DSA), Advanced Power Managem| Width: 4 in| Depth: 5.8 in| Height: 1 in

SAS interface compatible with servers that have capable RAID controllers | Improved power efficiency compared to prior generation | Advanced format 512e | Enterprise-class reliability with a 2M hours MTBF rating and 0.44% AFR | Reliable, field-proven, 7th generation 5-disk design