Western Digital · Enterprise
WUH721814ALE6L4
Ultrastar DC HC550 14TB
SATA 6 Gb/s · 3.5-inch · CMR
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Compare alternatives ↓As an Amazon Associate I earn from qualifying purchases.The Western Digital WUH721814ALE6L4 is a 14TB Ultrastar DC HC550 hard drive for server and enterprise storage, using SATA 6 Gb/s in a 3.5-inch form factor.
Manufacturer specifications
| Model number | WUH721814ALE6L4 |
|---|---|
| Nominal capacity | 14 TB · 14000 GB |
| RPM | 7200 |
| Interface | SATA 6 Gb/s |
| Recording | CMR |
| Cache (MB) | 512 |
| Form factor | 3.5-inch |
| Sector format | 512e |
| Drive construction | Helium |
| Recording evidence | Manufacturer recording specification ↗ |
| Recording verified | 2026-10-02 |
| Power Disable Pin 3 | Not supported (legacy configuration) |
Source: Western Digital Ultrastar DC HC550 datasheet, pages 2. Reviewed 2026-09-07. Published specifications, not our benchmark results.
What the specifications mean
- CMR recording is specified for this exact model. Check enclosure support and workload limits before installing it in an array.
Before ordering
Match WUH721814ALE6L4, 14TB and SATA 6 Gb/s against the selected offer. Check your system’s exact-model compatibility list and the seller’s warranty and return terms.
Amazon US listings
Exact model matches on Amazon.com. A verified ASIN identifies the product; it does not guarantee current stock. Check the selected variant, condition and seller.
No verified exact-model ASIN is linked yet. This does not establish whether the model is currently available. Compare the alternatives below and check their listings.
Same-capacity alternatives with Amazon US links
These models share the drive type, interface class and capacity. Compare their specifications and your system requirements before choosing a replacement.
Seagate · IronWolf Pro
ST14000NE0008
14TB · SATA 6 Gb/s · CMR
Specifications & offers →View on Amazon US ↗ASIN B07GTGDZP8 · Check price and conditionToshiba · MG09
MG09ACA14TE
14TB · SATA 6 Gb/s · CMR
Specifications & offers →View on Amazon US ↗ASIN B0DJXGMWZJ · Check price and conditionSeagate · Exos X18
ST14000NM001J
14TB · SATA 6 Gb/s · CMR
Specifications & offers →View on Amazon US ↗ASIN B09DVQ3934 · Check price and conditionWUH721814ALE6L4 questions answered
Is WUH721814ALE6L4 CMR or SMR?
The manufacturer lists CMR recording for WUH721814ALE6L4. Other models and capacities in the same family can differ.
What connection does WUH721814ALE6L4 need?
WUH721814ALE6L4 uses SATA 6 Gb/s and a 3.5-inch form factor. Match both with the computer, controller or enclosure. An M.2 slot, 2.5-inch bay and 3.5-inch bay are not interchangeable.
How much usable space does WUH721814ALE6L4 provide?
Its nominal capacity is 14000 GB, approximately 13038.5 GiB before formatting. The filesystem, reserved space and any RAID redundancy reduce usable capacity further.