| Specifications | |
| Model number | WD181KFGX |
| Interface | SATA 6 Gb/s |
| Formatted capacity | 18TB |
| Form factor | 3.5-inch |
| Native command queuing | Yes |
| Advanced Format (AF) | Yes |
| RoHS compliant | Yes |
| Performance | |
| Interface Transfer Rate (max) Interface Speed | 6 Gb/s |
| Interface Transfer Rate (max) Internal Transfer Rate | 272 MB/s |
| Cache (MB) | 512 |
| RPM | 7200 |
| Reliability/Data Integrity | |
| Load/unload cycles | 600,000 |
| Non-recoverable read errors per bits read | <10 in 1014 |
| MTBF (hours) | 1,000,000 |
| Workload Rate (TB/yr) | 300 |
| Limited warranty (years) | 5 |
| Power Management | |
| 12VDC-/+10% (A, peak) | 1,80 |
|
Average power requirements (W) Read/Write Idle Standby/Sleep |
6.1 3.6 0.9 |
| Environmental Specifications | |
|
Temperature (°C) Operating Non-operating |
0 to 65 -40 to 70 |
|
Shock (Gs) Operating (2 ms, read/write) Operating (2 ms, read) Non-operating (2 ms) |
30 50 250 |
|
Acoustics (dBA) Idle Seek (average) |
20 36 |
| Physical Dimensions | |
| Height (in./mm, max) | 1.028/26.1 |
| Length (in./mm, max) | 5.787/147 |
| Width (in./mm, ± .01 in.) | 4/101.6 |
| Weight (lb/kg, ± 10%) | 1.52/0.69 |