Western Digital RED WD40EFRX RED NAS
Posted on October 30th, 2015
4TB INTELLIPOWER/DDR2/3.5
Description
Features
- Designed for home and small office NAS systems
- Features NASware technology
- 4TB Storage capacity
- 3.5″ Form factor
- SATA 6GB/s interface
- IntelliPower rotational performance
- 64MB Cache
- 3 Year warranty
Specifications
| General |
| Interface |
SATA 6 Gb/s |
| Rotational Speed |
IntelliPower |
| Buffer Size |
64 MB |
| Transfer Rates |
| Buffer To Host (Serial ATA) |
6 Gb/s (Max) |
| Physical |
| Formatted Capacity |
4,000,592 MB |
| Capacity |
4TB |
| Performance |
| Target Performance |
| MTBF |
1,000,000 hours |
| Physical Dimensions |
| Height |
26.1 mm |
| Depth |
147 mm |
| Width |
101.6 mm |
| Weight |
0.635 kg |
| Environmental |
| Shock |
| Operating Shock (Read) |
65G, 2 ms |
| Non-operating Shock |
250G, 2 ms |
| Acoustics |
| Idle Mode |
23 dBA (average) |
| Seek Mode 0 |
24 dBA (average) |
| Temperature |
| Operating |
-0° C to 70° C |
| Non-operating |
-40° C to 70° C |
| Humidity |
| Operating |
5-95% RH non-condensing |
| Vibration |
| Operating |
0.004 g²/Hz (10 to 300 Hz) |
| Non-operating |
0.05 g²/Hz (10 to 300 Hz) |
| Operating – Linear |
20-300 Hz, 0.75G (0 to peak) |
| Electrical |
| Current Requirements |
| 12 VDC |
| Read/Write |
250 mA |
| Idle |
230 mA |
| Standby |
7 mA |
| Sleep |
7 mA |
| 5 VDC |
| Read/Write |
280 mA |
| Idle |
260 mA |
| Standby |
105 mA |
| Sleep |
105 mA |
| Power Dissipation |
| Read/Write |
4.40 Watts |
| Idle |
4.10 Watts |
| Standby |
0.60 Watts |
| Sleep |
0.60 Watts |
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