WD Ultrastar DC HC550 SE P3 18 TB SAS | Hard Drive | for data centers, 7200 rpm, 512 MB cache

CODE: 0F38353 / EAN: 8717306633321

WD Ultrastar DC HC550 SE P3 18 TB SAS | Hard Drive | for data centers, 7200 rpm, 512 MB cache

CODE: 0F38353 / EAN: 8717306633321
493,53 EUR without VAT (net)
Out of stock
24/7 operation: Yes
Average latency: 4.16
Component for: Server/workstation
Depth: 147
Show more parameters
Recommended products
Subscribe to the NEWSLETTER and receive 5EUR* for shopping
* Offer valid for orders from 45EUR |Regulation|


New products



Western Digital 18TB DC HC550 SAS - The Ultimate Capacity for the Data Center

The Ultrastar DC HC550 series is designed to meet the growing demand for data space in public and private cloud environments where storage density and cost-effective infrastructure are critical. The WD DC HC550 delivers 29% more capacity than 14TB helium-filled drives and a 21% lower Watts/TB ratio compared to 14TB helium-filled Ultrastar drives.

western digital data center drives ultra star

WD Ultra Star DC HC550 18 TB SAS drive benefits

  • CMR technology works seamlessly in high-capacity enterprise applications and environments
  • 18TB capacity in a standard 3.5-inch form factor
  • Reliable, field-proven sixth generation design
  • HelioSeal® design for exceptional power efficiency (Watts/TB)
  • TDMR and improved two-stage micro-actuator for optimum head positioning and resistance to rotational vibration
  • MTBF of 2.5 million hours
  • Self-encrypting drive options
western digital ULTRASTAR DC HC550

Higher capacity and lower maintenance costs

Data center decisions are driven by Total Cost of Ownership (TCO). Higher capacity hard drives play a leading role in lowering TCO. An 18TB data center hard drive provides 29% more capacity
in the same form factor as a 14TB hard drive. Western Digital introduces the 18TB Ultrastar® DC HC550 hard drive. Built using HelioSeal technology, the industry's only fifth-generation helium platform and the foundation for our high-capacity DC HC500 series, the Ultrastar DC HC550 is designed for public and private cloud environments where storage density, Watts/TB and cost/TB are critical parameters in creating the most cost-effective infrastructure.

HelioSeal technology helps meet the challenges of next-generation data centers

HelioSeal technology enables the Ultrastar DC HC550 drive to have one of the lowest power profiles in the industry, helping data center architects meet green goals and requirements. Designed to support workloads up to 550TB per year, the Ultrastar DC HC550 is based on conventional magnetic recording (CMR) technology for ease of installation in enterprise and cloud data centers.

New technologies to maximize capacity

The 18 TB capacity is achieved by combining technologies that improve areal density with technologies that improve performance and reduce power consumption. The WD HC550 is the industry's first hard drive to feature Energy-Assisted Magnetic Recording (EAMR) technology to improve write performance and thus increase areal density. The industry's first three-stage actuator (TSA) improves head positioning accuracy, provides better performance and higher areal density.

wd ultrastar technologies

Trusted reliability and quality for large-scale data storage

With massive capacity and unmatched reliability, the Ultrastar DC HC550 is ideal for object storage deployments. Compliance and privacy requirements drive the need for increased data security. The Ultrastar DC HC550 offers security and encryption options to help protect data from unauthorized use on both SATA and SAS models.


Features / filters
24/7 operation Yes
Average latency 4.16
Component for Server/workstation
Depth 147
Harmonized System (HS) code 84717050
HDD capacity 18000
HDD interface transfer rate 12
HDD size 3.5
HDD speed 7200
Height 26.1
Interface SAS
Manual Yes
Mean time between failures (MTBF) 2500000
Noise level (idle) 2
Non-operating shock 250
Non-operating vibration 1.04
Operating shock 50
Operating temperature (T-T) 5 - 60
Operating vibration 0.67
Operating voltage 5 / 12
Power consumption (idle) 5.6
Power consumption (read) 6.5
Power consumption (write) 6.5
Quantity 1
Start/stop cycles 600000
Storage drive buffer size 512
Storage temperature (T-T) -40 - 70
Type HDD
Weight 690
Width 101.6
Workload rate limit 550

Technical data
Capacity 18 TB
Interface SAS
Security SE
Speed 7200 rpm
Cache memory 512 MB
Data transmission speed up to 269 MB/s
Latency (average) 4.16 ms
MTBF 2.5 million hours
Energy consumption During operation: 8.8W
At rest: 5.6W
Dimensions 147mm x 101.6mm x 26.1mm
Weight 690 g


For which applications is the Western Digital Ultrastar DC HC550 18TB hard drive intended?

  • Cloud Storage

  • Massive scale-out (MSO) data centers

  • Distributed file systems

  • Massive data storage using object-oriented solutions such as Ceph™ and OpenStack® Swift

  • Primary and secondary storage for Apache Hadoop® for big data analytics

  • What are the benefits of purchasing a Western Digital Ultrastar DC HC550 18TB drive?

  • Delivers 29% more capacity than 14TB helium-filled drives

  • 21% lower idle W/TB ratio than helium-filled 14TB Ultrastar drives

  • Maintains performance in high rotational vibration environments and multi-drive systems

  • Provides compatibility with high-performance data centers

  • Retains previous firmware version for secure upgrade, verified with RSA signature

  • Unrivaled among enterprise hard drives

  • Hardware encryption helps protect data from unauthorized use (SED options)

  • 493,53 EUR without VAT (net)
    Out of stock
    Print version
    Session will expire in:
    You will be logged out after the session expires
    Choose a different country or region to shop in the language that suits you
    Our site uses cookies (so-called "cookies"). You can find more about these files, as well as about how we process your personal data, in our privacy policy.
    You are on page for country / region:
    English (EN)
    Please select a different country or region to shop in a language that suits you.