| Model Number4 | WD120EFGX WD120EFBX WD100EFGX WD101EFBX WD80EFPX WD80EFZZ WD60EFPX WD60EFZX WD40EFZZ WD40EFPX WD20EFPX |
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| Formatted capacity1 | 12TB 12TB 10TB 10TB 8TB 8TB 6TB 6TB 4TB 4TB 2TB |
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| Recording technology | CMR CMR CMR CMR CMR CMR CMR CMR CMR CMR CMR |
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| 接口 | SATA6Gb/s SATA6Gb/s SATA6Gb/s SATA6Gb/s SATA6Gb/s SATA6Gb/s SATA6Gb/s SATA6Gb/s SATA6Gb/s SATA6Gb/s SATA6Gb/s |
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| Form factor | 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch |
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| Drive Technology | Air Helium Air Air Air Air Air Air Air Air Air |
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| Native command queuing | Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes |
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| Advanced Format (AF) | Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes |
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| RoHS compliant5 | Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Performance |
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| Internal transfer rate6 up to | 260MB/s 196MB/s 260MB/s 215MB/s 215MB/s 185MB/s 180MB/s 185MB/s 180MB/s 180MB/s 180MB/s |
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| Cache (MB)1 | 512MB 256MB 512MB 256MB 256MB 128MB 256MB 128MB 128MB 256MB 64MB |
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| RPM | 72007 7200 7200 7200 5640 5640 5400 5640 5400 5400 5400 Reliability/Data Integrity |
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| Load/unload cycles8 | 600,000 600,000 600,000 600,000 600,000 600,000 600,000 600,000 600,000 600,000 600,000 |
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| Non-recoverable errors per | <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 <1 in 1014 bits read |
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| MTBF (hours)9 | 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 |
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| Workload rate (TB/year)2 | 180 180 180 180 180 180 180 180 180 180 180 |
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| Limited warranty (years)3 | 3 3 3 3 3 3 3 3 3 3 3 |
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| Power Management | 10 12VDC ±5% (A, peak) 1.9 1.84 1.9 1.75 1.75 1.75 1.75 1.75 1.75 A 1.75 1.2 Average power requirements (W) |
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| Read/Write | 8.8 6.3 8.8 8.4 5.2 6.2 4.7 6.2 4.5 4.7 4.0 |
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| Idle | 6.1 2.9 6.1 4.6 3.4 4.1 3.1 4.1 2.9 3.1 2.4 |
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| Standby and Sleep | 0.3 0.6 0.3 0.5 0.4 0.4 0.3 0.4 0.3 0.3 0.3 Environmental Specifications Temperature (°C) |
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| Operating | 0 to 65 0 to 65 0 to 65 0 to 65 0 to 65 0 to 65 0 to 65 0 to 65 0 to 65 0 to 65 0 to 65 |
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| Non-operating | -40 to 70 -40 to 70 -40 to 70 -40 to 70 -40 to 70 -40 to 70 -40 to 70 -40 to 70 -40 to 70 -40 to 70 -40 to 70 Shock (Gs) |
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| Operating, (2 ms, read/write) | 70 30 70 30 70 70 70 70 70 70 70 |
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| Operating, (2 ms, read) | 70 65 70 65 70 70 70 70 70 70 70 |
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| Non-operating (2 ms) | 250 300 250 250 250 250 250 250 250 250 300 Acoustics (dBA) |
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| Seek (average) | 39 29 39 38 28 30 27 30 27 27 26 Physical Dimensions |
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| Height (in./mm, max) | 1.028 / 26.1 1.028 / 26.1 1.028 / 26.1 1.028 / 26.1 1.028 / 26.1 1.028 / 26.1 1.028 / 26.1 1.028 / 26.1 1.028 / 26.1 1.028 / 26.1 1.028 / 26.1 |
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| Length (in./mm, max) | 5.787 / 147 5.787 / 147 5.787 / 147 5.787 / 147 5.787 / 147 5.787 / 147 5.787 / 147 5.787 / 147 5.787 / 147 5.787 / 147 5.787 / 147 |
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| Width (in./mm, ± .01 in.) | 4 / 101.6 4 / 101.6 4 / 101.6 4 / 101.6 4 / 101.6 4 / 101.6 4 / 101.6 4 / 101.6 4 / 101.6 4 / 101.6 4 / 101.6 |
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| Weight (lb/kg , ± 10%) | 1.65 / 0.75 1.46 / 0.66 1.65 / 0.75 1.65 / 0.75 1.58 / 0.715 1.65 / 0.75 1.65 / 0.75 1.65 / 0.75 1.21 / 0.55 1.26 / 0.57 0.99 / 0.45 Up to stated speed. As used for transfer rate, 1 MB/s = 1 million bytes per second. Based on internal testing; performance may vary depending upon host device, usage conditions, drive capacity and other factors. |
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| on operating environment. | 7 Actual spindle motor rotational speed for this model is 7200 RPM; although ID Device may report 5400 to reflect previous Performance Class designation. Workload rate is defined as the amount of user data transferred to or from the hard drive. Workload rate is annualized (TB transferred X (8760 / recorded power-on hours)). Workload rate will vary depending on your 8 Controlled unload at ambien |
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| San Jose, CA 95119, USA | or trademarks of Western Digital Corporation or its affiliates in the US and/or other countries. All other marks are the property of their respective owners. Product specifications subject to change without notice. Pictures shown may vary from actual products. September 2025 |
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