WD Ultrastar DC HC520 HUH721212AL4200 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.

More Value For Data Centers Through Capacity, Energy Efficiency And Reliability:
- Western Digital offers an exceptional capacity hard drive to tame this explosion of data: the Ultrastar ® DC HC520, formerly known as Ultrastar He12 and part of our HC500 series of helium-sealed hard drives. Thus, you lay the foundation for a worry-free data center. Designed to handle workloads of up to 550TB per year, the Ultrastar DC HC520 is the industry´s first 12TB drive 1 and uses Perpendicular Magnetic Recording (PMR) technology, so it´s ready to run in whatever environments or applications. for companies of any capacity. The stable internal environment created by HelioSeal ® technologyThe 4th generation enables a new 8-drive design, increasing capacity by 20% compared to the 7-drive design of the previous generation, Ultrastar DC HC510. This high-capacity helium-filled drive offers one of the lowest power profiles in the industry, enabling data center architects to meet environmental goals and requirements. Specified for an MTBF 2 rate of 2.5 million hours, the Ultrastar DC HC520 is the most reliable drive available on the market today and has been inspired by the successful design of its 10, 8 and 6 TB predecessors. Trust Western Digital and the Ultrastar DC HC520 to bring more capacity, efficiency, and reliability to your data center—and drive more value.

HelioSeal Technology Helps Solve The Challenges Facing Next-Generation Data Centers:
- Data centers are facing increasing pressures. The volume of data is increasing, operating costs are increasing, and yet budgets are frozen. Reducing the total cost of ownership (TCO) has become a priority for data center architects, and in this regard, the Ultrastar DC HC520 provides the best value for money proposition and the highest storage efficiency available. Compared to Ultrastar 8TB air-sealed drives, this HelioSeal hard drive provides 50% more capacity, uses 52% less power (Watts/TB), and is 25% more reliable, with 2. 5 million hours MTBF. Ready for data centers, it includes a second-generation dual-phase actuator—the Western Digital Microactuator—, that improves head positioning accuracy to deliver higher performance, data integrity, and overall drive reliability, especially in environments with multiple drives subject to vibration during operation. For more information, see our technical description. The choice of a SATA 6 Gb/s and SAS 12 Gb/s interface allows for easy integration into high-performance data centers.


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: 4096
- Features: Perpendicular Magnetic Recording (PMR), Instant Secure Erase (ISE), 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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