WD Ultrastar DC HC520 HUH721212AL5204 3.5´´ 12TB Hard Disk Drive

The breadth and depth of Big Data drives a universal need for greater capabilities across a wide variety of applications and workloads. By laying the foundation for a seamless data center, Western Digital provides the ability to conquer the data explosion with the Ultrastar DC HC500 series of hard drives. Built on HelioSeal technology, the industry´s fifth-generation helium-only platform, the DC HC500 series is designed for private and public cloud environments where storage density, Watts/TB, and USD/TB capacity are critical to creating the most cost-effective infrastructure. HelioSeal technology is critical to achieving higher drive capacities, higher reliability rates, and extreme power savings.


Features:

- Large capacity in a standard 3.5-inch form factor
- Conventional Magnetic Recording (CMR) technology that works seamlessly in enterprise-capable environments
- Reliable, field-proven design across five generations
- HelioSeal design provides energy savings (W/TB)


Specifications:

General:
- Type of device: Internal hard-drive
- Ability: 12 TB
- Form factor: 3.5´´
- Interface: SAS 12Gb/s
- Buffer size: 256 MB
- Bytes per sector: 512
- Features: Perpendicular Magnetic Recording (PMR), secure erase function, Enterprise, 24/7 availability
- Width: 101.6 mm
- Depth: 147 mm
- Height: 26.1 mm
- Weight: 660 g

Installment:
- Drive Transfer Rate: 1.2 GBps (external)
- Search time: 8 ms (media)
- Medium latency: 4.16 ms
- Spindle speed: 7200 rpm

Reliability:
- MTBF (mean time between errors): 2,500,000 hours
- Operation 24 hours a day, 7 days a week: Yes
- Irreversible errors: 1 times 10^15
- Charge / Discharge Cycles: 600,000

Expansion and connectivity:
- Interfaces: 1 x SAS 12 Gb/s
- Compatible bay: 3.5´´

Feeding:
Energy consumption:
- 9.8 watts (active)
- 6.1 watts (standby)

Environment parameters:
- Minimum operating temperature: 5 °C
- Maximum operating temperature: 60 °C
- Minimum storage temperature: -40 °C
- Storage temperature: 70 °C
- Shock Tolerance (Operating): 70 g semisenusoidal wave of 2 ms
- Shock tolerance (non-operating): 300 g semisenusoidal wave of 2 ms
- Vibration tolerance (operational): 0.67 g 5-500 Hz
- Vibration tolerance (non-operating): 1.04 g 2-200 Hz

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