Brand: Western Digital | Category: Enterprise HDDs
SKU: WUH721820ALE6L4 | Part #: WUH721820ALE6L4 | MPN: WUH721820ALE6L4
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The Western Digital Ultrastar DC HC650 20TB (part number WUH721820ALE6L4) is a 3.5-inch enterprise hard disk drive with a SATA 6 Gbps interface. It offers 20 TB of capacity, a 7200 RPM spindle speed, 512 MB of cache memory and a maximum data transfer rate of 272 MB/s. The drive is helium-filled.
Rated performance figures include an average seek time of 8.5 ms and an average rotational latency of 4.17 ms. Power consumption is listed at 4.4 W at idle and 8.5 W during read/write operations. The drive has an operating temperature range of 0–60°C and an MTBF rating of 2.5 million hours.
As a high-capacity 3.5-inch SATA drive, it is suited to servers, storage arrays and other enterprise systems where large volumes of data need to be stored.
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| Brand | Western Digital |
| Category | Enterprise HDDs |
| SKU | WUH721820ALE6L4 |
| Part Number | WUH721820ALE6L4 |
| Condition | New |
| Capacity | 20 TB |
| Manufacturer Part Number | WUH721820ALE6L4 |
| Form Factor | 3.5-inch |
| Interface | SATA 6 Gbps |
| Max Data Transfer Rate | 272 MB/s |
| Spindle Speed | 7200 RPM |
| Rotational Latency | 4.17 ms (average) |
| Cache Memory | 512 MB |
| Helium-Filled | Yes |
| Average Seek Time | 8.5 ms |
| Operating Temperature | 0–60°C |
| Power Consumption (Idle) | 4.4 W |
| Power Consumption (Read/Write) | 8.5 W |
| MTBF | 2.5 million hours |
the Western Digital Ultrastar DC HC650 20TB HDD WUH721820ALE6L4 suits enterprise data-center storage tiers — all-flash arrays, hyperconverged storage pools (vSAN, Ceph), database backends, and high-throughput backup repositories. It is supported by major server platforms.
Key specifications for the Western Digital Ultrastar DC HC650 20TB HDD WUH721820ALE6L4: new condition; capacity 20 TB; manufacturer part number WUH721820ALE6L4; form factor 3.5-inch; interface SATA 6 Gbps; max data transfer rate 272 MB/s; spindle speed 7200 RPM. Manufacturer part number WUH721820ALE6L4. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.
