only hard drivesin all categories
only hard drives
United Kingdom

WD Ultrastar DC HC550 WUH721818ALE6L4 18 TB
SATA

Photos - Hard Drive WD Ultrastar DC HC550 WUH721818ALE6L4 18 TB SATA
Videos 3
from £311.62 up to £402.49 
add to listmy lists
WD WUH721818ALE6L4
DC (server)helium5 year warranty
14 TB
SATA
16 TB
SAS
16 TB
SATA
18 TB
SAS
18 TB
SATA
Placement
built-in
Type
HDD
Features
server
Size
18000 GB
Form factor
3.5 "
Connection
SATA3
Helium
Manufacturer's warranty
5 years
Cache memory
512 MB
RPM
7200 rpm
Data transfer rate
269 MB/s
Operation power consumption
6.5 W
Standby power consumption
5.6 W
MTBF
2.5 M h
MTBF
600 K
Size
147x102x26 mm
Weight
690 g
Added to E-Catalog
January 2021
P/N
0F38458

0F38459

HC500 series of helium-filled hard drives.

Innovative high-capacity, 18TB, enterprise-class internal hard drive from the WD Ultrastar DC HC550 3.5" HDD range, which includes 16TB and 18TB models. These drives are high-quality server drives with a design and firmware optimized for the task at hand. long-term storage of information in disk arrays with a large number of HDDs (enterprise-level server or data center) Uses advanced Energy-Assisted Magnetic Recording (EAMR) technology, which has significantly increased the density of data on the plates.

The WD Ultrastar DC HC550 WUH721818ALE6L4 is a helium-filled, leak-proof drive with nine platters that rotate at 7200 rpm. awn, excellent reliability and moderate power consumption. SATA3 is used as a connection interface, so this model can be installed in productive workstations. With properly organized cooling, it can be operated 24/7. The recording resource declared by the manufacturer is 550 TB / year.

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog WD 2025 - new arrivals, bestsellers, and the most relevant models WD.
How to Choose a Hard DriveUnderstanding how to choose the right HDD for gaming, video recording, server, and other tasks

Buy WD Ultrastar DC HC550 WUH721818ALE6L4 18 TB
SATA

All prices 10 →
When you make a purchase through links on our site, we may receive a affiliate commission.

WD Ultrastar DC H550C 18TB 35" SATA Enterprise HDD/Hard Drive 7200rpm W126140285

Amazon.co.uk
Delivery: to United Kingdom
Report
£337.98
Buy in shop

WD Ultrastar DC HC550 18TB 3.5 HDD SATA 512E SE 7200RPM 0F38459

Ultrastar DC HC500 Series High Capacity for Massive Data and Lower Total Cost of Ownership... moreDriving 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 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. Continuous Innovation for Highest Capacities and Lower TCO The Ultrastar DC HC550 18TB CMR HDD and Ultrastar DC HC650 20TB SMR HDD are delivering industry leading capacity for the data center through a combination of new and proven technologies. Western Digital is the first to deliver Energy-Assisted Magnetic Recording (EAMR) technology and a Triple Stage Actuator (TSA). These new technologies combined with further mechanical innovations and HelioSeal technology provide the industry’s highest capacities to enable data at scale with optimized TCO for data center architectures, while maintaining workload reliability and performance. Solves TCO Challenges High Capacity Up to 18TB HDDs, drop-in ready for...
Senetic.co.uk
Delivery: to United Kingdom
Report
£311.62
Buy in shop

Western Digital Ultrastar DC HC550 3.5" 18 TB Serial ATA III

Clove.co.uk
Delivery: to United Kingdom
Report
£381.38
Buy in shop

Western Digital Ultrastar DC HC550 internal hard drive 18 TB 7200 RPM 0F38459

Western Digital Ultrastar DC HC550 internal hard drive 18 TB 7200 RPM 512 MB 3.5" Serial ATA III
itsupplies.uk
Delivery: to United Kingdom
Report
£324.52
Buy in shop

Western Digital Ultrastar DC HC550 18TB Internal Hard Drive 3.5 Serial ATA III 0F38459

Western Digital Ultrastar DC HC550 18TB Enterprise Hard DriveThe Western Digital Ultrastar DC HC550 is a high-capacity, enter... moreprise-class hard drive designed for demanding server and workstation environments. It offers a large 18TB capacity, high rotational speed, and a robust design for reliable data storage.&.nbsp. &.nbsp.Key Features:High Capacity (18TB): Provides substantial storage space for large datasets and demanding applications.&amp.nbsp. &.nbsp.7200 RPM Rotational Speed: Delivers fast data access and transfer speeds.&.nbsp. &.nbsp.Large Cache (512MB): Improves read and write performance by caching frequently accessed data.&.nbsp. &.nbsp.3.5-inch Form Factor: Standard form factor for easy integration into server and workstation chassis.&.nbsp. &.nbsp.SATA III Interface: Utilizes the SATA III interface for high-speed data transfer rates (up to 6 Gb/s).&.nbsp. &.nbsp.Technical Specifications:Brand: Western DigitalSeries: Ultrastar DC HC550Capacit...
RefreshCartridges.co.uk
Delivery: in United Kingdom
Report
£373.47
Buy in shop
5 more offer(s)
Series WD DC (server)Compare using chart →
WD Ultrastar DC HC580 WUH722424ALE6L4
from £409.99 
24000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC310 HUS726T6TALE6L4
from £181.45 
6000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3
WD Ultrastar DC HC310 HUS726T4TALE6L4
from £142.83 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3
WD Ultrastar DC HC550 WUH721816ALE6L4
from £281.84 
16000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC570 WUH722222ALE6L1
from £393.99 
22000 GB, built-in, pC, helium, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC330 WUS721010ALE6L4
from £216.22 
10000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC550 WUH721818ALE6L4
from £311.62 
18000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC320 HUS728T8TAL5204
from £212.65 
8000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SAS, warranty 5 years
WD Ultrastar DC HC550 WUH721818AL5204
from £306.52 
18000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SAS, warranty 5 years
WD Ultrastar DC HC310 HUS726T6TAL5204
from £179.99 
6000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3
WD Ultrastar DC HC560 WUH722020BLE6L4
from £324.66 
20000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SATA3
WD Ultrastar DC HA210 HUS722T2TALA604
from £106.96 
2000 GB, built-in, server, 3.5 ", buffer: 128 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HA210 HUS722T1TALA604
from £82.04 
1000 GB, built-in, server, 3.5 ", buffer: 128 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC320 HUS728T8TALE6L4
from £202.99 
8000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC550 WUH721816AL5204
from £284.69 
16000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SAS, warranty 5 years
WD Ultrastar DC HC310 HUS726T4TAL5204
from £104.99 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3
WD Ultrastar DC HC330 WUS721010AL5204
from £225.96 
10000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC570 WUH722222AL5201
from £356.58 
22000 GB, built-in, pC, helium, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SAS, warranty 5 years
WD Ultrastar DC HC530 WUH721414AL5204
from £326.99 
14000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SAS, warranty 5 years
WD Ultrastar DC HC550 WUH721814ALE6L4
from £287.42 
14000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SATA3, warranty 5 years

WD Ultrastar DC HC550 WUH721818ALE6L4 configurations

Price for WD Ultrastar DC HC550 WUH721818ALE6L4
WD Ultrastar DC HC550 WUH721814ALE6L4 14 TB
SATA
from £287.422 offers
WD Ultrastar DC HC550 WUH721816AL5204 16 TB
SAS
from £284.699 offers
WD Ultrastar DC HC550 WUH721816ALE6L4 16 TB
SATA
from £281.849 offers
WD Ultrastar DC HC550 WUH721818AL5204 18 TB
SAS
from £306.528 offers
WD Ultrastar DC HC550 WUH721818ALE6L4 18 TB
SATA
from £311.6210 offers
Video reviews
Western Digital Ultrastar DC HC550 18TB #1 (good) and #2 (bad) - Spin up/down
22 July 20235 261 view
Western Digital Ultrastar DC HC550
27 May 2023379 view
Western Digital WD Ultrastar DC HC550 18TB Hard Drive Unboxing and Test
14 February 202210 015 view
We recommendCompare using chart →
WD Gold Enterprise Class WD181KRYZ
from £366.43 
18000 GB, built-in, server, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD181KFGX
from £376.47 
18000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
Seagate Exos X18 ST18000NM000J
from £265.39 
18000 GB, built-in, server, helium, 3.5 ", 7200 rpm, connection: SATA3, warranty 5 years
Seagate Exos X20 SATA ST18000NM003D
from £243.44 
18000 GB, built-in, server, 3.5 ", 7200 rpm, connection: SATA3, warranty 5 years
Seagate IronWolf Pro ST18000NT001
from £375.99 
18000 GB, built-in, server, helium, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
Seagate SkyHawk AI ST18000VE002
from £294.70 
18000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Purple Pro WD181PURP
from £343.40 
18000 GB, built-in, pC, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
Toshiba MG09 MG09ACA18TE
from £289.99 
18000 GB, built-in, pC, 3.5 ", buffer: 512 MB, write MAMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Blue
from £24.99 
built-in, 500 - 8000 GB, 3.5 ", 5400 rpm - 7200 rpm
Transcend StoreJet 25M3
from £53.02 
external, 640 - 4000 GB, 2.5 ", 5400 rpm
Seagate SkyHawk
from £51.58 
built-in, 1000 - 8000 GB, 3.5 ", 5400 rpm - 7200 rpm
Seagate BarraCuda Compute
from £39.99 
built-in, 1000 - 8000 GB, 3.5 ", 5400 rpm - 7200 rpm