Ultrastar® DC HC520 (He12) High Capacity for Massive Data and Lower Total Cost of Ownership The breadth and depth of Big Data is driving the universal need for higher capacities across a broad spectrum of applications and workloads. Laying the foundation for a worry-free data center, Western Digital delivers the capacity to conquer the data explosion with the Ultrastar DC HC500 series of hard drives. Built using HelioSeal technology, the industry’s only fifth-generation helium platform, the DC HC500 series is designed for public and private cloud environments, where storage density, Watts/TB and $/TB are critical for creating the most cost-efficient infrastructure. HelioSeal technology is key to achieving higher drive capacities, greater reliability ratings and extreme power efficiency. The result is a lower Total Cost of Ownership (TCO) for our cloud and enterprise customers. Features: 12TB capacity in a standard 3.5-inch form factor PMR technology works with all capacity enterprise applications & environments Reliable, field-proven, 4th generation design Outstanding power efficiency (Watts/TB) Compared to 8TB Ultrastar air drives 50% more capacity 52% more power efficient (Watts/TB) 25% more reliable (MTBF) SATA 6Gb/s and SAS 12Gb/s 12Gb/s SAS compatible with next-gen data centers; backwards compatible with 6Gb/s SAS 2.5M hours MTBF rating & 5-year limited warranty Instant Secure Erase (ISE) & Self-Encrypting Drive (SED) options Advanced Format 4Kn and 512e models Specifications: Interface SAS 12 Gb/s Capacity 12TB Format: Sector size (bytes) 4Kn: 4096, 4112 4160, 4224 512e: 512, 520, 528 Data buffer (MB) 256 Rotational speed (RPM) 7200 Interface transfer rate (MB/s, max) 1200 Sustained transfer rate (MiB/s, typical) - 243 (MB/s, typical) - 255 Error rate (non-recoverable bits read) 1 in 1015 MTBF (M hours) 2.5 Annualized Failure Rate (AFR) 0.35% Load/Unload cycles (at 40°C) 600,000 Availability (hrs/day x days/wk) 24x7 Limited warranty (yrs) 5 Idle/Operating (Bels, typical) 2.0/3.6 Requirement +5 VDC, +12VDC Operating (W, typical) 10.1 Idle (W) 6.1 z-height (mm) 26.1 Dimensions (width x depth, mm) 101.6 (+/-0.25) x 147 Weight (g, max) 660