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| Performance Specifications | WD3200AAKS |
| Rotational Speed | 7200 RPM |
| Buffer Size | 16 MB |
| Average Latency | 4.20 ms (nominal) |
| Contact Start/Stop Cycles | 50,000 minimum |
| Seek Times | |
| Read Seek Time | 8.9 ms |
| Write Seek Time | 10.9 ms (average) |
| Track-To-Track Seek Time | 2.0 ms (average) |
| Full Stroke Seek | 21.0 ms (average) |
| Transfer Rates | |
| Buffer To Host (Serial ATA) | 3 Gb/s (Max) |
| Buffer To Disk | 972 Mbits/s (Max) |
| Physical Specifications | |
| Formatted Capacity | 320,072 MB |
| Capacity | 320 GB |
| Interface | SATA 3 Gb/s |
| User Sectors Per Drive | 625,142,448 |
| Physical Dimensions | |
| English | |
| Height | 1.028 Inches (Max) |
| Length | 5.787 Inches (Max) |
| Width | 4.00 Inches (+/- 0.010 inch) |
| Weight | 1.33 Pounds |
| Metric | |
| Height | 25.4 mm (Max) |
| Length | 147 mm (Max) |
| Width | 101.6 mm |
| Weight | 0.60 kg |
| Environmental Specifications | |
| Operating Shock (Read) | 65G, 2 ms |
| Non-operating Shock | 350G, 2 ms |
| Acoustics | |
| Idle Mode | 25 dBA (average) |
| Seek Mode 0 | 29 dBA (average) |
| Seek Mode 3 | 26 dBA (average) |
| Temperature (English) | |
| Operating | 32° F to 140° F |
| Non-operating | -40° F to 149° F |
| Temperature (Metric) | |
| Operating | 0° C to 60 ° C |
| Non-operating | -40° C to 65° C |
| Humidity | |
| Operating | 5-95% RH non-condensing |
| Non-operating | 5-95% RH non-condensing |
| Altitude (English) | |
| Operating | -1,000 feet to 10,000 feet |
| Non-operating | -1,000 feet to 40,000 feet |
| Altitude (Metric) | |
| Operating | -305M to 3,050M |
| Non-operating | -305M to 12,200M |
| Operating Vibration | |
| Linear | 20-300 Hz, .75G (0 to peak) |
| Random | 7-500 Hz, 0.00221 g² / Hz |
| Non-operating Vibration | |
| Low Frequency | 10-300 Hz, 0.195 inches (double amplitude) |
| High Frequency | 300-500 Hz, 5.0G (0 to peak) |
| Electrical Specifications | |
| 12 VDC Current Requirements | |
| Read/Write | 395 mA |
| Idle | 380 mA |
| Standby | 6 mA |
| Sleep | 6 mA |
| 5 VDC Current Requirements | |
| Read/Write | 660 mA |
| Idle | 532 mA |
| Standby | 180 mA |
| Sleep | 180 mA |
| Power Dissipation | |
| Read/Write | 7.80 Watts |
| Idle | 7.20 Watts |
| Standby | .97 Watts |
| Sleep | .97 Watts |
