

WESTERN DIGITAL HDD Server 3.5" SATA 6Gb/s - (WUS721210BLE6L4)
Description
This WD 3.5" server hard drive with a capacity of 10TB is aimed at systems where reliability and capacity are more important than anything else – servers, storages, NAS boxes, and more serious workstations. The combination of 7200 rpm, large 512MB cache, and SATA3 6 Gb/s interface provides stable and predictable transfer for 24/7 workloads. The disk has a classic 3.5" form factor and weighs about 0.75 kg, so it fits easily into standard server baskets and cases. MTBF of 2,000,000 hours indicates that it is designed for long life in an environment where downtime is not an option.
What you get: a serious volume of 10TB for databases, virtual machines, backups, or video surveillance, with a sufficiently fast 267 MB/s SATA transfer for sequential operations. 512MB cache helps with more frequent random reads/writes, so file servers and shared resources respond more adequately. Read time of 8.5ms and write 8.6ms are typical for a 7200 rpm server disk and provide a good basis for RAID arrays, where the actual speed multiplies. With MTBF 2,000,000 hours, you can plan for longer maintenance cycles and less frequent replacement of disks in arrays. The physical dimensions 101.6 x 147 x 26.1 mm facilitate integration into standard 3.5" slots and rails.
- Large capacity of 10TB, suitable for large data arrays, archives, and long-term backups in a server environment.
- Rotation speed 7200 rpm, providing higher real throughput and lower access time compared to slower disks.
- Declared maximum transfer via SATA up to 267 MB/s, which is important for sequential operations like backup, imaging, and streaming.
- Large 512MB cache, which reduces latency during frequent operations and helps with busy file servers.
- Interface SATA3 6 Gb/s, compatible with standard server and desktop boards without the need for exotic controllers.
- Read time 8.5ms and write 8.6ms, providing predictable behavior under mixed I/O loads.
- MTBF of 2,000,000 hours and warranty of 36 months, which is a serious plus for 24/7 environments where reliability is critical.
It is suitable for file and backup servers, NAS systems, storage for video surveillance, and any scenarios where you need a lot of terabytes at a good price and stable operation 24/7. If you are looking for a disk for OS with maximum responsiveness for desktop or gaming, it is better to combine such an HDD with an SSD, rather than relying solely on it.
The most sensible thing here is the combination of 10TB capacity, 7200 rpm, large 512MB cache, and server MTBF, which makes it a robust backbone for serious storage solutions.
Full specifications
- Manufacturer
-
WD
- Product Code
- WUS721210BLE6L4
- Hard disk type
- Server
- Form factor
-
3.5"
- Capacity
- 10TB
- SATA transfer speed
-
267 MB/s
- Speed (RPM)
- 7200 rpm
- Cache memory (MB)
- 512
- SATA interface
- SATA3 6 Gb/s
- Read time
- 8.5ms
- Write time
- 8.6ms
- Weight
- 0.75 kg
- MTBF (hours of operation)
- 2,000,000hr
- Dimensions (mm)
- 101.6 x 147 x 26.1 mm
- Warranty
- 36 months
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