WD Ultrastar DC HC560 20TB - 7200 RPM 512MB SATA III Enterprise HDD - 0F38785
WD Ultrastar DC HC560 20TB enterprise HDD — 7200 RPM, 512MB cache, SATA III 6Gb/s, up to 291 MiB/s sustained, 550 TB/yr workload, 2.5M hr MTBF, OptiNAND & HelioSeal tech.
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The WD Ultrastar DC HC560 is a high-capacity 20TB enterprise hard drive designed for data centers, cloud storage, hyperscale environments, and 24/7 operation. Featuring 7200 RPM spindle speed, 512MB cache, and SATA III 6Gb/s interface, it delivers sustained transfer rates up to 291 MiB/s. Advanced technologies including OptiNAND, EAMR (Energy-Assisted Magnetic Recording), TSA (Triple Stage Actuator), and 7th-generation HelioSeal helium-sealed design ensure reliability, power efficiency, and compatibility with all-capacity enterprise applications.
Built on a nine-disk platform (2.2TB/platter) with CMR recording, this 3.5-inch drive offers an industry-leading 2.5 million hours MTBF, 550 TB/year workload rating, and 5-year limited warranty. Model 0F38785 is the SATA SE (Standard Encrypt) variant; SED self-encrypting options available separately. Ideal for massive scale-out storage, distributed file systems, big data analytics, and bulk storage solutions like Ceph.
- ✅ 20TB capacity, 7200 RPM, 512MB cache
- ✅ SATA III 6Gb/s, up to 291 MiB/s sustained
- ✅ 2.5M hours MTBF, 550 TB/yr workload
- ✅ OptiNAND, EAMR, HelioSeal technologies
- ✅ 5-year warranty, enterprise-grade reliability
| HDD capacity | 20 TB |
| HDD speed | 7200 RPM |
| Storage drive buffer size | 512 MB |
| HDD size | 3.5 |
| Interface | Serial ATA (SATA III 6Gb/s) |
| Type | HDD |
| Component for | Server/workstation, Data center |
| HDD interface transfer rate | 6 Gbit/s |
| HDD sustained transfer rate | 291 MiB/s |
| Average latency | 4.16 ms |
| Workload rate limit | 550 TB/year |
| Mean time between failures (MTBF) | 2.5 million hours |
| Limited warranty | 5 years |
| Recording technology | CMR, ePMR, EAMR |
| Areal density | 1131 Gbits/sq. in. |
| Operating temperature (T-T) | 5 - 60 °C |
| Width | 101.6 mm |
| Height | 147 mm |
| Depth | 26.1 mm |
| Weight | 690 g |
| Model Number | 0F38785 (SATA SE) |
| Security | SED available (separate model) |
| Form Factor | 3.5-inch |
| HelioSeal | Yes (7th generation) |
| OptiNAND | Yes |