Elara WD Ultrastar DC HC550 WUH721818ALE6L4

Overview

Range/Series Overview

IMPORTANT: This Range/Series overview section describes the range of which this product belongs. Features of different versions might be mentioned and may not apply to the specific product on this page. Please view Specs for specification of product.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.

Features Summary

• 18ТВ, enabled by EAMRProvides 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) technologyMore 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 architectureBetter random write performance.
• SATA 6Gb/s & SAS 12Gb/sProvides compatibility with high-performance data centers.
• 512MB cache bufferImproves response time and data management.
• Dual Safe, RSA-signed firmwareRetains previous firmware version for safe firmware updates, verified with an RSA signature.
• 2.5M hours MTBF and 0.35% AFRUnsurpassed reliability rating for Capacity Enterprise HDD for fewer failures/less service needs.