Recording technology for the HUH721010ALE600 is not stated in any WD document we have checked (WD Ultrastar DC data center drives, checked October 2026). The nearest model with a sourced answer is the WD101EFBX (CMR).
HUH - Ultrastar He series, helium-filled (earlier branding). (Western Digital - Ultrastar model-number nomenclature)721010 - Capacity and generation field. The leading digits encode capacity in the family's own scheme; each model's own specification sheet states its exact capacity. (Western Digital - Ultrastar model-number nomenclature)ALE - SATA 6Gb/s interface, 512e sector format. (Western Digital - Ultrastar model-number nomenclature)600 - we have not found a WD document defining this segmentNearest model with a sourced answer: WD101EFBX (WD Red Plus 10TB, CMR). Listed for comparison only - two part numbers can use different recording methods, so its answer is not HUH721010ALE600's.
Part-number reference: HUH721010ALE600 — decoded segments, sibling variants and the warranty check. Live rankings this model belongs to: every 10TB hard drive. Product pages for this part number: HGST Ultrastar He10 10TB SATA NAS · WD Ultrastar 10TB SATA HUH721010ALE600 · WD Ultrastar 10TB SATA HUH721010ALE600 · WD Ultrastar 10TB SATA HUH721010ALE600.
Checked, and it does not state this part number's recording technology: WD Ultrastar DC data center drives · Checked
Without a manufacturer document we can cite, we cannot tell you whether this drive shingles its tracks, and that is the field that decides whether it belongs in an array. Treat it as unverified rather than as probably fine: if the drive is going into a NAS or anything that rebuilds, buy a model whose recording technology is sourced. If it is a single drive holding replaceable data, the recording technology is largely academic and this is a reasonable purchase either way.
| Model number | HUH721010ALE600 |
| Brand | WD |
| Family | Ultrastar DC |
| Capacity | 10TB |
| Form factor | 3.5" |
| Rotational speed | 7200 RPM |
| Cache | 512 MB |
| Recording technology | — |
| Workload rate | — |
| Warranty | 5 years |
| Status | Current |
| Replaced by | — |
A dash means we have not found a manufacturer document stating that field for this exact model. We leave it blank rather than filling it from a retailer listing.
We checked WD Ultrastar DC data center drives and it does not state this part number's recording technology, so we do not state one. The nearest model with a sourced answer is the WD101EFBX, which is CMR.
The recording technology is unsourced, so we cannot clear it for arrays either way. What the spec table does say: no stated workload rating and a 5-year warranty. For an array, prefer a 10TB drive whose recording technology is sourced, such as the WD101EFBX (CMR).