Internal hard drives with higher capacities and lower TCO

Data center decisions are driven by TCO. The Ultrastar DC HC550, with 16TB & 18TB¹, play a leading role in reducing TCO.

Total Cost of Ownership (TCO) Drives the Data Center Architecture
Data center decisions are driven by TCO. Higher capacity hard drives play a leading role in reducing TCO. An 18TB data center internal hard drive provides 29% more capacity in the same form factor as a 14TB HDD. Higher capacity HDDs enable data centers to lower CapEx by reducing supporting hardware and system level costs when compared to lower capacity drives. Helium-sealed, low power, high reliability drives reduce energy and maintenance costs, contributing to OpEx savings. For example, a data center using 18TB HDDs vs. 14TB HDDs can require 22% fewer racks while consuming 21% less power per TB at idle, resulting in significant overall TCO reduction for data center environments.

Raising the Capacity Bar with New Technologies
Ultrastar DC HC550 integrates a suite of technologies on a 9-disk platform to create a new class of HDDs. 18TB capacity is achieved by combining technologies that improve areal density working together with technologies that improve performance and reduce power consumption.
●  The first internal hard drives in the industry to harness Energy-Assisted Magnetic Recording (EAMR) technology improves writability and therefore increases areal density.
●  The industry’s first Triple Stage Actuator (TSA) enhances head-positioning accuracy, delivering better performance and increased areal density.
●  HelioSeal® technology is the foundation for Western Digital’s high capacity HDDs and this is the 6th generation of HelioSeal product. Western Digital has shipped >65 million HelioSeal products to date.

Full Specifications

Key Features

18TB Storage Capacity
3.5" Form Factor
SATA III 6 Gb/s Interface
512MB Cache
7200 rpm
Up to 269 MB/s Data Transfer Speeds
2.5 Million Hour MTBF
HelioSeal Technology
600,000 Load/Unload Cycles
0.35% Annualized Failure Rate (AFR)

WD HC550 Internal HDD Specs

Key Specs

Storage Capacity	Total: 18 TB SATA III (6 Gb/s) 3.5" HDD (7200 rpm)
Read Speed	Maximum: 269 MB/s
Write Speed	Maximum: 269 MB/s

Read Speed	Maximum: 269 MB/s
Write Speed	Maximum: 269 MB/s
Buffer	512 MB

HDD Specs

Areal Density	1022 Gb/in²
Disk Sector Format	512e
Noise Level	3.6 dB (Active) 2.0 dB (Idle)

Reliability / Data Integrity

Annualized Failure Rate (AFR)	0.35 %
Encryption	None
Endurance (Total Bytes Written)	550 TB
Load/Unload Cycles	600,000
Mean Time Between Failures (MTBF)	2.5 Million Hours
Non-Recoverable Read Errors per Bits Read	1 in 10¹⁵

Electrical

Power Draw	6.5 W (Active) 5.6 W (Idle) 0.31 W (Standby)
Supported Voltage	5 VDC, 12 VDC

Environmental

Operating Temperature	41 to 140°F / 5 to 60°C
Storage Temperature	-40 to 158°F / -40 to 70°C
Operating Shock	50 G / 2.0 ms
Storage Shock	250 G / 2.0 ms
Operating Vibration	0.67 G / 5 to 500 Hz
Storage Vibration	1.04 G / 2 to 200 Hz

General

Dimensions	5.8 x 4 x 1" / 147.32 x 101.6 x 25.4 mm
Weight	1.52 lb / 690 g

Packaging Info

Package Weight	1.78 lb
Box Dimensions (LxWxH)	6.75 x 5.38 x 2.3"

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