Western Digital WD Red 3TB NAS Internal HDD 3.5" Desktop Hard Drive Disk
Product Description
MODEL:
WD20EFRX
WD30EFRX
WD40EFRX
WD50EFRX
WD60EFRX
| Product Specifications |
| |
Interface |
SATA 6 Gb/s |
| |
| Performance Specifications |
| |
Rotational Speed |
IntelliPower * |
| |
Buffer Size |
64 MB |
| |
| Transfer Rates |
| |
Buffer To Host (Serial ATA) |
6 Gb/s (Max) |
| |
| Physical Specifications |
| |
Formatted Capacity |
4,000,787 MB |
| |
Capacity |
2TB/3TB/4 TB/5TB/6TB |
| |
User Sectors Per Drive |
7,814,037,168 |
| |
| Performance Specifications |
| Target Performance |
| |
MTBF |
1,000,000 hours |
| |
| Physical Dimensions |
| English |
| |
Height |
1.028 Inches |
| |
Depth |
5.787 Inches |
| |
Width |
4.00 Inches |
| |
Weight |
1.50 Pounds |
| |
| Metric |
| |
Height |
26.1 mm |
| |
Depth |
147 mm |
| |
Width |
101.6 mm |
| |
Weight |
0.68 kg |
| |
| Environmental Specifications |
| Shock |
| |
Operating Shock (Read) |
65G, 2 ms |
| |
Non-operating Shock |
250G, 2 ms |
| |
| Acoustics |
| |
Idle Mode |
25 dBA (average) |
| |
Seek Mode 0 |
28 dBA (average) |
| |
| Temperature (English) |
| |
Operating |
32° F to 158° F |
| |
Non-operating |
-40° F to 158° F |
| |
| Temperature (Metric) |
| |
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 Specifications |
| 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 |
4.50 Watts |
| |
Idle |
3.30 Watts |
| |
Standby |
0.40 Watts |
| |
Sleep |
0.40 Watts |
| |
| Compatibility |
| Operating System |
| |
Compatibility |
Windows/Mac |
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