WD Ultrastar DC HC550 16TB 7.2K 3.5" SAS 12Gbps 512e 512MB HDD WUH721816AL5204
94409WD Ultrastar DC HC550 16TB 7.2K 3.5" SAS 12Gbps 512e 512MB HDD WUH721816AL5204
WD Ultrastar DC HC550 16TB 7.2K 3.5" SAS 12Gbps 512e 512MB Enterprise HDD WUH721816AL5204 (0F38357) Data Center Grade!
Manufacturer: Western Digital
Model: WUH721816AL5204 | WD P/N: 0F38357
Condition: Clean, tested pull 100% Fully Working & Verified!
Thoroughly tested by certified technician all checks 100% passed (see below)!
What's Included: Drive only as pictured. No trays, cables, or accessories.
**30-Day Hassle-Free Warranty **
Shop with total confidence full refund or replacement if not perfect!
Why this HDD?
Helium-, CMR technology for unmatched reliability in data centers, surveillance, or bulk storage. Supports up to 550TB/year workload, with 2.5M-hour MTBF. Pulled from low-usage enterprise rack like new, zero errors, ready for RAID or NAS builds.
Ships fast & securely packaged same day if ordered before 3PM EST!
Our Rigorous Testing Results:
- Drive Temperature Test: 100% Pass
- Random Read Test: 100% Pass
- Extended Background Test: 100% Pass
- Sequential Read Test: 100% Pass
- S.M.A.R.T. Error Test: 100% Pass
Full Official Specifications:
| General | |
| Model | WUH721816AL5204 |
| Capacity | 16TB |
| Form Factor | 3.5-inch |
| Recording Technology | CMR (Conventional Magnetic Recording) |
| Sector Format | 512e (512 emulation) |
| Helium | Yes |
| Performance | |
| Rotational Speed | 7200 RPM |
| Sustained Transfer Rate | Up to 262 MB/s |
| Cache (On-Board) | 512MB |
| Average Latency | 4.16 ms |
| Buffer to Host | 12 Gbps |
| Interface & Connectivity | |
| Interface | Dual-port SAS 12Gb/s |
| Connector | SFF-8482 (29-pin) |
| Max Devices Supported | Up to 128 (with expanders) |
| Reliability & Endurance | |
| MTBF (Mean Time Between Failures) | 2.5 million hours |
| Annualized Failure Rate (AFR) | 0.35% |
| Workload Rating | 550 TB/year |
| Load/Unload Cycles | 600,000 |
| Non-Recoverable Read Errors per Bits Read | 1 in 10E15 |
| Power & Acoustics | |
| Power Consumption (Avg Read/Write) | 6.3W |
| Idle Power | 4.3W |
| Acoustics (Idle/Seek) | 20/28 dBA |
| Environmental | |
| Operating Temperature | 5C to 60C |
| Non-Operating Temperature | -40C to 70C |
| Humidity (Operating) | 5-95% (non-condensing) |
| Vibration (Operating) | 5 Hz to 500 Hz, 0.64 Grms |
| Shock (Operating) | 40G (2 ms) |