Western Digital Ultrastar DC HC550 18TB 3.5" 7200 RPM SATA
MPN WUH721818ALE6L4 UPC 829686006720UPC 829686006768
- Capacity
- 18TB
- Speed
- 7,200 RPM
- Cache
- 512 MB
- Interface
- SATA
- Form factor
- 3.5"
- Recording
- CMR
Best price now
$399.99
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In stock at 1 stores nationwide.
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In-store stock · 1 store
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Specifications
Drive
- Capacity
- 18TB
- Form factor
- 3.5"
- Interface
- SATA
- Speed
- 7,200 RPM
- Cache
- 512 MB
- Recording
- CMR
- Helium
- Yes
Use & reliability
- Made for
- Enterprise
- Workload
- 550 TB/year
- Warranty
- 5 years
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Full spec sheet from Newegg
- Model/Brand
- WD
- Model/Model
- WUH721818ALE6L4 (0F38459)
- Model/Series
- Ultrastar DC HC550
- Features/Usage
- For Enterprise Storage
- Model/Packaging
- Bare Drive
- Performance/RPM
- 7200 RPM
- Features/Features
- Up to 18TB capacity in a standard 3.5-inch form factor Industry's first Energy-Assisted Magnetic Recording technology Industry's 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
- Performance/Cache
- 512MB
- Performance/Capacity
- 18TB
- Performance/Interface
- SATA 6.0Gb/s
- Dimensions/Form Factor
- 3.5"
- Dimensions/Width (maximum)
- 101.60mm
- Dimensions/Height (maximum)
- 26.10mm
- Dimensions/Length (maximum)
- 147.00mm
- Performance/Average Latency
- 4.16ms
- Performance/Recording Technology
- CMR
- Additional Information/First Listed on Newegg
- November 07, 2025
Full spec sheet from Wdstore
- RPM
- 7200 RPM
- Cache
- 512 MB
- Parts
- 5-Year Limited Warranty
- Capacity
- 18 TB
- Interface
- SATA
- Store/UPC
- 829686006720
- Form Factor
- 3.5-Inch
- Store/Drive
- 3.5 "
- Store/Width
- 4 "
- Store/Height
- 1.03 "
- Store/Length
- 5.79 "
- Store/Weight
- 690 gms
- Workload Rate
- 550TB/year
- Store/Connector
- SATA
- Store/Interface
- SATA
- Store/Cache Size
- 512 MB
- Store/Form Factor
- 3.5-Inch
- Store/Model Number
- WUH721818ALE6L4
- Store/Transfer Rate
- up to 269 MB/s
- Store/compatibility
- <ul> <li>Windows, Windows Server, Linux</li> </ul>
- Recording Technology
- CMR
- Store/Certifications
- BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL
- Store/ROHS Complaint
- true
- Store/Endurance (TBW)
- 550TB/year
- Store/Disk Speed (RPM)
- 7200 RPM
- Store/Performance Class
- 7200 RPM
- Store/Recording Technology
- CMR
- Store/Operating Temperature
- 5, 60 °C
- Store/Retail box weight (max)
- 7.5 lbs
- Store/Non-Operating Temperature
- -40, 70 °C
- Store/Mean Time to Failure (MTTF)
- 2.5M Hours
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