Western Digital Enterprise RE4-GP 2TB SATA 3 Gb/s 3.5" 64MB IntelliPower Internal Hard Drive - OEM/Bare Offers data-hungry organizations massive capacity with significant power savings and lower cost while delivering performance Designed based on WD's exclusive GreenPower platform, to deliver power savings and equipped with 64 MB cache and dual processors. A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings and solid performance. RAID-specific, time-limited error recovery (TLER) - Prevents drive fallout caused by the extended hard drive error-recovery processes Ships in Certified Frustration-Free Packaging