Western Digital Ultrastar DC HC550 18 TB Hard Drive - 3.5" Internal - SAS [12Gb/s SAS] (244987)

This item is brand-new, factory sealed.

Driving Up Capacity and Driving Down TCO for Cloud and Hyperscale Data Centers

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/16TB Ultrastar DC HC550 HDDs are the first commercial implementation of Energy-Assisted Magnetic Recording technology and utilize the industrys 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.

Highlights

Up to 18TB capacity in a standard 3.5-inch form factor

Industrys first Energy-Assisted Magnetic Recording technology

Industrys 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 and a 5-year limited warranty

Applications and Workloads

Cloud & Hyperscale Storage

Massive Scale-Out (MSO), high-density data centers

Distributed File Systems

Bulk storage using Object storage solutions like Ceph and OpenStack Swift

Primary and secondary storage for Apache Hadoop for Big Data Analytics

Surveillance Analytics
General
Interface
SAS 12 Gb/s
Capacity
18TB
Format: Sector size (bytes)
4Kn: 4096, 4112 4160, 4224
512e: 512, 520, 528
Performance
Data buffer (MB)
512
Rotational speed (RPM)
7200
Sustained transfer rate
(MiB/s, typical)
257
(MB/s, typical)
269
Reliability
Error rate (non-recoverable bits read)
1 in 10¹⁵
MTBF (M hours, projected)
2.5
Annualized Failure Rate (AFR, projected)
0.35%
Load/Unload cycles (at 40^oC)
600,000
Availability (hrs/day x days/wk)
24x7
Acoustics
Idle/Operating (Bels, typical)
2.0
Power
Requirement
+5 VDC, +12VDC
Operating (W)
8.8
Idle (W)
5.8
Power consumption efficiency at Idle
(Watts/TB)
0.32
Environmental (Operating)
Ambient temperature
5^oC to 60^oC
Shock (half-sine wave, 2ms, G)
70
Environmental (Non-Operating)
Ambient temperature
-40^oC to 70^oC
Shock (half-sine wave, G)
250 (2ms)
Random Vibration (G RMS, 2 to 200 Hz)
1.04 (XYZ)
Item Dimension (L"x W"x H")
6 x 4 x 2
Weight
1.50 LB
Warranty Information
5 years