WD Ultrastar DC HC550 Enterprise HDD
Brand: Western Digital | Category: Enterprise HDDs
SKU: WUH721818BLE6L4 | Part #: WUH721818BLE6L4 | MPN: WUH721818BLE6L4
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About the WD Ultrastar DC HC550 Enterprise HDD
The WD Ultrastar DC HC550 Enterprise HDD from Western Digital is enterprise-grade Enterprise HDDs hardware built for data centers. It features 18TB capacity, 3.5" form factor, SATA 6Gb/s interface, Read: 267 MB/s, Write: 267 MB/s speed. The Western Digital Ultrastar DC HC550 is a 18TB 3.5-inch enterprise-class hard disk drive built on HelioSeal helium-sealed platform technology, delivering high areal density across nine platters with CMR (Conventional Magnetic Recording) for broad compatibility with enterprise storage infrastructures. Operating at 7200 RPM with a 512MB cache buffer, the drive is engineered to sustain demanding 24/7 workloads at up to 550TB per year workload rating, making it suitable for lar Available in brand new condition. Western Digital enterprise hdds products are trusted by enterprises and data centers worldwide. Available from Omnixon Global. Contact our sales team to request a quote.
Technical Specifications
| Brand | Western Digital |
| Category | Enterprise HDDs |
| SKU | WUH721818BLE6L4 |
| Part Number | WUH721818BLE6L4 |
| Condition | New |
| Capacity | 18TB |
| Form Factor | 3.5" |
| Interface | SATA 6Gb/s |
| Speed | Read: 267 MB/s, Write: 267 MB/s |
| Manufacturer Part Number | WUH721818BLE6L4 |
| Series | Ultrastar DC HC550 |
| Capacity | 18TB |
| Form Factor | 3.5-inch |
| Interface | SATA 6Gb/s |
| Spindle Speed | 7200 RPM |
| Cache Buffer | 512MB |
| Recording Technology | CMR (Conventional Magnetic Recording) |
| Areal Density | Up to 1026Gb per square inch |
| Number of Platters | 9 |
| Helium-Sealed Enclosure | Yes (HelioSeal) |
| Workload Rate (Annualized) | 550TB/year |
| MTBF | 2,500,000 hours |
| Nonrecoverable Read Errors | 1 per 10^15 bits read |
| Power – Operating (Typical) | 7.4W |
| Power – Idle | 5.0W |
| Operating Temperature | 0°C to 60°C |
| Vibration Compensation | RAFF (Rotational Acceleration Feed Forward) |
| Dimensions | 101.85mm x 146.99mm x 26.11mm |
| Weight | 650g (approximate) |
| RoHS Compliant | Yes |
Frequently Asked Questions about WD Ultrastar DC HC550 Enterprise HDD
What does the WD Ultrastar DC HC550 Enterprise HDD do?
At 18TB, the WD Ultrastar DC HC550 Enterprise HDD suits enterprise data-center storage tiers — all-flash arrays, hyperconverged storage pools (vSAN, Ceph), database backends, and high-throughput backup repositories. The SATA 6Gb/s interface is supported by major server platforms.
What are the headline specs of the WD Ultrastar DC HC550 Enterprise HDD?
Key specifications for the WD Ultrastar DC HC550 Enterprise HDD: capacity 18TB; form factor 3.5 inch; interface SATA 6Gb/s; new condition; drive media type HDD; storage form factor 3.5 inch; storage capacity 18TB; storage interface SATA 6Gb/s. Manufacturer part number WUH721818BLE6L4. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.
Is the WD Ultrastar DC HC550 Enterprise HDD compatible with my infrastructure?
The WD Ultrastar DC HC550 Enterprise HDD uses a SATA 6Gb/s interface in a 3.5 inch form factor. It's compatible with server platforms that expose this interface — typical deployments include Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro SuperServer chassis. For specific vendor part-number compatibility, our team validates against the manufacturer support matrix.