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WD Ultrastar DC HC550 WUH721816ALE6L4 16 TB
SATA

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WD WUH721816ALE6L4
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
16000 GB
Form factor
3.5 "
Connection
SATA3
Helium
Manufacturer's warranty
5 years
Cache memory
512 MB
RPM
7200 rpm
Data transfer rate
262 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
0F38461

0F38462

HC500 series of helium-filled hard drives.
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

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SATA

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WD Ultrastar DC HC550 16TB 3.5 HDD SATA 512E SE 7200RPM 0F38462

0F38462...
Senetic.co.uk
Delivery: to United Kingdom
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£283.49
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Western Digital Ultrastar DC HC550 internal hard drive 16 TB 7200 RPM 0F38462

Hard driveComponent forServer/workstationHDD interface transfer rate6 Gbit/sWorkload rate limit550 TB/yearAverage latency4.16... moremsMean time between failures (MTBF)2500000 hStart/stop cycles600000HDD speed7200 RPMHDD size3.5"HDD capacity16 TBFeaturesTypeHDDComponent forServer/workstationHDD interface transfer rate6 Gbit/sWorkload rate limit550 TB/yearInterfaceSerial ATA IIIAverage latency4.16 msMean time between failures (MTBF)2500000 hStart/stop cycles600000HDD speed7200 RPMHDD size3.5"H
ComputersDeal.com
Delivery: in United Kingdom
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£301.99
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Western Digital 0F38462

Data center decisions are driven by TCO. The Ultrastar DC HC550, with 16TB & 18TB1, play a leading role in reducing TCO.Featu... moreres: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 HDD 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 HDD 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.Specifications:- Capacity: 16 TB- Interface: SAS- Connector: SATA- Disk Speed (RPM): 7200rpm- Cache Size (MB): 512MB- Form Factor: 3.5 Inch- Transfer Rate: up to 1200MB/s- Compatibility: Compatible with Windows, Windows Server and Linux- Dimensions (L x W x H): 5.79´´ x 4´´ x 1.03´´
Tradeinn.com
Delivery: in United Kingdom
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£300.99
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Western Digital Ultrastar DC HC550 internal hard drive 16 TB 7200 RPM 512 MB 3.5" Serial ATA III 0F38462

Ultrastar DC HC500 SeriesN/AN/AHigh Capacity for Massive Data and Lower Total Cost of OwnershipN/AN/ADriving Up Capacity and... moreDriving Down TCO for Cloud and Hyperscale Data CentersN/AN/AThe 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.N/AN/AThe 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.N/AN/ASolves TCO ChallengesN/A- High CapacityN/AUp to 18TB HDDs drop-in ready for Big Data workloadsN/A- Low PowerN/AUp to 61% lower idle W/TB than 10TB Ultrastar air-filled drivesN/A- More ReliableN/A25% higher MTBF rating than air-filled HDDsN/AN/AContinuous Innovation for Highest Capacities and Lower TCON/AN/AThe 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.N/AN/AWestern 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 industrys highest capacities to enable data at scale with optimized TCO for data center architectures while maintaining workload reliability and performance.
Quzo.co.uk
Delivery: to United Kingdom
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£360.26
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Western Digital Ultrastar DC HC550 3.5" 16 TB Serial ATA III

Clove.co.uk
Delivery: to United Kingdom
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£345.91
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5 more offer(s)
Series WD DC (server)Compare using chart →
WD Ultrastar DC HC310 HUS726T6TALE6L4
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WD Ultrastar DC HC550 WUH721816ALE6L4
from £283.49 
16000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SATA3, warranty 5 years
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WD Ultrastar DC HC560 WUH722020BLE6L4
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WD Ultrastar DC HC550 WUH721818ALE6L4
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18000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC570 WUH722222ALE6L1
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WD Ultrastar DC HC320 HUS728T8TALE6L4
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8000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
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8000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SAS, warranty 5 years
WD Ultrastar DC HC310 HUS726T4TALE6L4
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4000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3
WD Ultrastar DC HA210 HUS722T2TALA604
from £110.40 
2000 GB, built-in, server, 3.5 ", buffer: 128 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC550 WUH721818AL5204
from £373.99 
18000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SAS, warranty 5 years
WD Ultrastar DC HC560 WUH722020BL5204
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20000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SAS
WD Ultrastar DC HC550 WUH721816AL5204
from £325.99 
16000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SAS, warranty 5 years
WD Ultrastar DC HC310 HUS726T6TAL5204
from £194.99 
6000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3
WD Ultrastar DC HC310 HUS726T4TAL5204
from £101.99 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3
WD Ultrastar DC HC330 WUS721010AL5204
from £188.68 
10000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC560 WUH722020ALE6L4
from £296.01 
20000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, 7200 rpm, connection: SATA3
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 WUH721816ALE6L4 configurations

Price for WD Ultrastar DC HC550 WUH721816ALE6L4
WD Ultrastar DC HC550 WUH721814ALE6L4 14 TB
SATA
from £301.993 offers
WD Ultrastar DC HC550 WUH721816AL5204 16 TB
SAS
from £325.995 offers
WD Ultrastar DC HC550 WUH721816ALE6L4 16 TB
SATA
from £283.4910 offers
WD Ultrastar DC HC550 WUH721818AL5204 18 TB
SAS
from £373.998 offers
WD Ultrastar DC HC550 WUH721818ALE6L4 18 TB
SATA
from £264.009 offers
Video reviews
Western Digital Ultrastar DC HC550 18TB #1 (good) and #2 (bad) - Spin up/down
22 July 20234 011 view
Western Digital Ultrastar DC HC550
27 May 2023297 view
Western Digital WD Ultrastar DC HC550 18TB Hard Drive Unboxing and Test
14 February 20229 584 view
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