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WD Ultrastar DC HC550
Ultrastar DC HC550 is Western Digital's 18TB, 16TB and 14TB data-center hard-drive family on the helium-sealed 10-disk CMR platform with OptiNAND (7200 RPM), offered over SATA 6Gb/s and SAS 12Gb/s. Per-model pages list the WUH order code with its matching 0F part number.
One datasheet, several ordering codes. Each code keeps its own detail page; this page lists them side by side. Specifications are compiled by our own team — we link to the manufacturer's document, we never host it.
| Part number | Category | Brand | Package | Temp grade | Lifecycle | Datasheet |
|---|---|---|---|---|---|---|
| WUH721818ALE6L4 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721818ALE6L1 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721818AL5205 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721818AL5204 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721818AL5201 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721816ALE6L4 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721816ALE6L1 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721816AL5205 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721816AL5204 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721816AL5201 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721814ALE6L4 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721814ALE6L1 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721814AL5205 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721814AL5204 | HDD | Western Digital | 3.5-inch | — | — | — |
| WUH721814AL5201 | HDD | Western Digital | 3.5-inch | — | — | — |
Each ordering code is a separate part page.
The codes above come from the same manufacturer document but differ by capacity, temperature grade, package or lifecycle.
Open a code for its compiled specification; verify every parameter against the official documentation before design-in.