| Manufacturer: | WESTERN DIGITAL |
| Manufacturer Part No: | WD40EFZZ |
| General |
| Device Type: | Hard drive - internal |
| Capacity: | 4 TB |
| Form Factor: | 3.5" |
| Interface: | SATA 6Gb/s |
| Buffer Size: | 128 MB |
| Features: | Conventional magnetic recording (CMR), Air Drive Design, Advanced Format technology, NAS compatible, NASware technology |
| Width: | 101.6 mm |
| Depth: | 147 mm |
| Height: | 26.1 mm |
| Weight: | 550 g |
| Performance |
| Drive Transfer Rate: | 600 MBps (external) |
| Internal Data Rate: | 180 MBps |
| Spindle Speed: | 5400 rpm |
| Reliability |
| MTBF: | 1,000,000 hours |
| 24x7 Operation: | Yes |
| Non-Recoverable Errors: | 1 per 10^14 |
| Load / Unload Cycles: | 600,000 |
| Expansion & Connectivity |
| Interfaces: | 1 x SATA 6 Gb/s |
| Compatible Bay: | 3.5" |
| Power |
| Power Consumption: | 4.5 Watt (read)
4.5 Watt (write)
2.9 Watt (idle)
0.3 Watt (sleep) |
| Miscellaneous |
| Compliant Standards: | BSMI, ICES-003, NMB-003, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB Scheme, TUV, UL, RoHS |
| Manufacturer Warranty |
| Service & Support: | Limited warranty - 3 years |
| Environmental Parameters |
| Min Operating Temperature: | 0 °C |
| Max Operating Temperature: | 65 °C |
| Min Storage Temperature: | -40 °C |
| Max Storage Temperature: | 70 °C |
| Shock Tolerance (operating): | 70 g @ 2 ms |
| Shock Tolerance (non-operating): | 250 g @ 2 ms |
| Sound Emission: | 27 dBA |
