WD Ultrastar DC HC550 WUH721818ALE6L4, Hard drive, 18 TB, internal, 3.5", SATA 6Gb/s, 7200 rpm, buffer: 512 MB

Description

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 disk drives (HDDs). The DC HC500 series is designed for public and private cloud environments where storage density and cost-efficient infrastructure is critical.
The 18TB Ultrastar DC HC550 HDDs are the first commercial implementation of Energy-Assisted Magnetic Recording technology and utilize the industry’s first Triple Stage Actuator. These technologies, integrated with HelioSeal on a 9-disk platform, deliver the highest areal density and unmatched Total Cost of Ownership for customer and market needs.

• Industry’s first Energy-Assisted Magnetic Recording technology
• Industry’s first Triple Stage Actuator
• Leading HelioSeal technology
• Reliable, field-proven design across five generations
• HelioSeal design delivers power efficiency (Watts/TB)
• 2.5M hours MTBF rating

• 18??, enabled by EAMR
  Provides 29% more capacity than 14TB helium-filled drives.
• Ultra-low Watts per Terabyte (W/TB)
  21% lower idle W/TB than 14TB Ultrastar helium-filled drives.
• Triple Stage Actuator and Two-Dimensional Magnetic Recording (TDMR) technology
  More accurate head positioning, especially in multi-drive environments, for better performance and data integrity.
• Rotational Vibration Safeguard (RVS)
  Maintains drive performance in high rotational vibration environments and multi-drive systems.
• Media Cache Plus architecture
  Better random write performance.
• SATA 6Gb/s & SAS 12Gb/s
  Provides compatibility with high-performance data centers.
• 512MB cache buffer
  Improves response time and data management.
• Dual Safe, RSA-signed firmware
  Retains previous firmware version for safe firmware updates, verified with an RSA signature.
• 2.5M hours MTBF and 0.35% AFR
  Unsurpassed reliability rating for Capacity Enterprise HDD for fewer failures/less service needs.

Main Specifications

Extended Specifications

General

Performance

Reliability

Expansion & Connectivity

Power

Environmental Parameters