6 part numbers tracked ยท 15 in stock now ยท prices updated
He10 is WD/HGST's name for the HUH721010-series 10TB helium-sealed enterprise hard drive, one generation before He12. We track 6 distinct part numbers across SAS and SATA, with 15 in stock right now (6 new, 9 recertified or used). It currently accounts for roughly 35% of the recertified 10TB listings we track. Unlike He12, we could not identify a "current WD name" for this generation at all - see the naming note below.
The same base part number splits across SAS and SATA interfaces and, on the SAS and SATA 4Kn variant, sector format - a distinction that decides whether a drive will drop into an existing array at all. Every row below links to its own decode page, built from WD's published Ultrastar interface-suffix documentation.
| Part number | Interface | Sector format | Family label in our catalogue | |
|---|---|---|---|---|
| HUH721010AL4200 | SAS-12G | - | Ultrastar He10 | decode โ |
| HUH721010AL5200 | SAS-12G | - | Ultrastar He | decode โ |
| HUH721010AL5204 | SAS-12G | - | Ultrastar He10 | decode โ |
| HUH721010ALE600 | SATA-6G | 512e | Ultrastar He10 | decode โ |
| HUH721010ALE604 | SATA-6G | 512e | Ultrastar He10 | decode โ |
| HUH721010ALN600 | SATA-6G | 4Kn | Ultrastar He10 | decode โ |
Amber sector format = 4Kn. 3 SAS variants, 3 SATA variants tracked.
Every HUH721010 variant is the same 10TB helium-sealed mechanism behind two different interfaces, and picking between them is a question about your controller, not about the drive. A SAS variant needs a SAS host bus adapter or a SAS-capable backplane - it will not run from a motherboard SATA port at all. A SATA variant is more flexible: it runs on a native SATA port and will also run on a SAS controller, which is why SATA is the safer default for a homelab build with an unknown or mixed backplane.
Sector format is the trap that a plain interface check misses. Among the SAS variants, AL4-suffixed part numbers are 4Kn (4K native) while AL5-suffixed numbers are 512e - two different on-disk sector geometries under the same base part number and the same interface. A 4Kn drive dropped into an array, RAID controller or filesystem built for 512e will typically fail to initialise or will report a capacity mismatch rather than silently working at reduced performance, so this is a compatibility question to settle before purchase, not something to discover during a rebuild. The variant table above states the format for every part number we track rather than leaving it to the listing text, which frequently omits it entirely.
He10 is a real but not overwhelming share of 10TB refurbished supply - about 35% of it right now, smaller than He12's share at 12TB. That means the site-wide 10TB figures on Recertified 10TB drives describe a broader market than He10 alone, more so than the equivalent comparison does at 12TB.
Read the matched-model figure over the shelf figure when the two disagree. The shelf number compares whatever happens to be cheapest on each side today, which at a capacity this old can easily mean comparing a He10 recertified pull against a completely different new drive from a different product tier - the matched figure instead compares the same model against its own price in the other condition, and is the one worth trusting when its model count is not vanishingly small.
1 at/near low ยท 8 typical ยท 1 elevated
| Model | Capacity | Condition | Recording | Price | Verdict | $/TB | |
|---|---|---|---|---|---|---|---|
| HUH721010ALE600 Refurbished | 10TB | Used | UNVERIFIED | $200 | AT/NEAR LOW since 2026-09-14 | $20.00 | Buy on Amazon |
| HUH721010AL5200 Refurbished | 10TB | Used | UNVERIFIED | $235 | TYPICAL since 2026-09-14 | $23.50 | Buy on Amazon |
| HUH721010ALE600 Refurbished | 10TB | Used | UNVERIFIED | $280 | TYPICAL since 2026-09-14 | $27.99 | Buy on Amazon |
| HUH721010ALE604 Refurbished | 10TB | Used | UNVERIFIED | $290 | TYPICAL since 2026-09-14 | $29.00 | Buy on Amazon |
| HUH721010AL4200 Refurbished | 10TB | Used | UNVERIFIED | $309 | TYPICAL since 2026-09-14 | $30.90 | Buy on Amazon |
| HUH721010ALE600 Refurbished | 10TB | Used | CMR | $319 | TYPICAL since 2026-09-14 | $31.90 | Buy on Amazon |
| HUH721010AL5200 Refurbished | 10TB | Used | UNVERIFIED | $347 | TYPICAL since 2026-09-14 | $34.73 | Buy on Amazon |
| HUH721010ALN600 New | 10TB | New | UNVERIFIED | $372 | TYPICAL since 2026-09-14 | $37.17 | Buy on Amazon |
| HUH721010AL5204 Refurbished | 10TB | Used | UNVERIFIED | $406 | TYPICAL since 2026-09-14 | $40.60 | Buy on Amazon |
| HUH721010ALE600 Refurbished | 10TB | Used | UNVERIFIED | $300 | ELEVATED since 2026-09-14 | $30.00 | Buy on Amazon |
Verdicts are computed from our own daily snapshots, always against the same drive's own record and never against a manufacturer list price. The only price shown on this page is the current one, with the time we last checked it โ we publish the verdict as a label rather than printing past prices. Out-of-stock drives are excluded entirely, and the date beside each badge tells you how long we have been watching that drive.
He10 is a nearline enterprise platform rather than a NAS-branded line, so it does not carry a manufacturer NAS-compatibility marketing page the way IronWolf or Red Pro do. What it does carry is whatever the independent NAS-vendor compatibility registries this site tracks actually list it against, matched at the base part-number level rather than by capacity or by name - the same registry the compatibility hub uses everywhere else on the site.
Yes, on price per terabyte specifically: the cheapest He10 we track right now is $20.00/TB against $27.50/TB for the cheapest He12, so He10 is currently the lower cost per terabyte of the two - though it is also two terabytes smaller per drive, which matters for bay-limited builds.
Interface and, on some part numbers, sector format - not capacity or generation. The PN variant table above lists every HUH721010 suffix we track with its interface and whether it is 512e or 4Kn; a SAS drive needs a SAS host bus adapter or backplane, while a SATA drive runs on either a SATA port or a SAS controller. Pick based on what your system actually has, not on any claimed difference in the drive itself - WD's documentation for these interface suffixes does not describe one.
We could not confirm or deny this from WD's own documentation - the same access problem covered on the helium generations page applied here. What we can say is that HC510 is currently absent from WD's own footnote naming its current 550TB/yr-rated Ultrastar lineup, and its dedicated product page 404s on WD's live site - so unlike He12, which maps onto a name (HC520) WD is still actively selling, He10 does not have an obvious "current WD name" in what we could verify at all.
About 35% of the 26 recertified 10TB listings we currently track are HUH721010-series drives - a real share, though a smaller majority than He12 holds at 12TB. The full 10TB picture, all brands and conditions, is at the recertified 10TB page linked below.