0TS2160: Western Digital Ultrastar DC HC560 20TB 7200 RPM SATA 6Gb/s 512e 3.5-Inch Enterprise Hard Drive
Also listed as: WUH722020ALE6L4, Ultrastar DC HC560 20TB SATA, 0TS2161 · made by Western Digital
The Western Digital Ultrastar DC HC560 20TB (model WUH722020ALE6L4) is the industry's first commercial 20TB CMR hard drive utilizing OptiNAND technology. OptiNAND integrates an iNAND UFS embedded flash drive to store metadata and improve burst write caching performance during emergency power loss events. When buying used 20TB enterprise HDDs, check SMART attribute 1 (raw read error rate) and attribute 5 (reallocated sector count), ensure helium seals report valid pressure, and confirm host HBA firmware supports 20TB drive addressing.
Specifications
| Part number | 0TS2160 |
|---|---|
| Brand | Western Digital |
| Made by | Western Digital |
| Type | Hard drives |
| Other numbers | WUH722020ALE6L4, Ultrastar DC HC560 20TB SATA, 0TS2161 |
| Status | current |
| Capacity (GB) | 20,000 |
| Interface | SATA 6Gb/s |
| Form factor | LFF 3.5in |
| Speed | 7200 rpm |
| Cache (GB) | 0.512 |
| Generation fit | Universal 3.5-inch enterprise server and storage drive bays |
About the 0TS2160
0TS2160 is Western Digital's 20TB 7200 RPM SATA 6Gb/s enterprise hard drive in the Ultrastar DC HC560 series, model WUH722020ALE6L4. Utilizing a 9-disk helium platform with OptiNAND technology, it integrates an embedded iNAND flash drive to optimize metadata caching and improve drive efficiency during power loss events. It provides 269 MB/s sustained transfer speed, serving as the enterprise benchmark for high-density cloud storage nodes.
Compatibility
Fits standard 3.5-inch large-form-factor server drive bays across modern enterprise server platforms from Dell, Lenovo, HPE, and Supermicro. Requires a SATA 6Gb/s compatible controller or SAS/SATA HBA. Ensure host storage controller firmware is updated to support 20TB capacity addressing.
How to identify a genuine unit
The label features Ultrastar DC HC560 branding with model WUH722020ALE6L4, part number 0TS2160, and OptiNAND notation. In system management software, the drive identifies as WDC WUH722020ALE6L4. OEM variants (such as Dell 400-BOEP) feature Dell firmware prefixes.
Buying used
Inspect SMART health for raw read error rate, reallocated sector count, and helium seal pressure status. Verify that the drive was not decommissioned from a locked proprietary SAN enclosure. Confirm that mounting screw holes on the 3.5-inch aluminum casting are undamaged.
Reference prices (last 14 days, updated 2026-10-27)
New: USD 375 (1 sighting, Oct 2026)
Used: USD 240 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| serversupply.com | new | USD 375 | 2026-10-27 | |
| ebay.com | used | USD 240 | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
Equivalent part numbers
- Dell 400-BOEP Dell 20TB 7.2K SATA 3.5in Enterprise Hard Drive
FAQ
What is OptiNAND technology in the HC560?
It integrates an embedded flash memory chip on the drive controller to optimize drive metadata and cache management.
What is the continuous transfer speed?
Up to 269 MB/s sustained transfer rate.
Is the HC560 CMR or SMR?
It uses standard CMR (Conventional Magnetic Recording) with EAMR.
Buying or selling 0TS2160?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Ultrastar DC HC560 Hard Drive Data Sheet, checked 2026-10-27