TECHNICAL SPECIFICATIONS
| Product Specifications | |
| Model number | WD221PURP |
| Interface | SATA 6 Gb/s |
| Formatted capacity | 22TB |
| Form factor | 3.5-inch |
| Advanced Format (AF) | Yes |
| Recording Technology | CMR |
| RoHS compliant | Yes |
| Product Features | |
| Maximum drive bays supported | No Limit |
| Camera Support | Up to 64 HD |
| AI Streams | 32 |
| Firmware Feature Name | AllFrame AI |
| Tarnish resistant components | Yes |
| Performance | |
| Interface transfer rate (max) Buffer to host | 6 Gb/s |
| Interface transfer rate (max) Host to / from drive | 265 MB/s |
| Cache (MB) | 512 MB |
| RPM | 7200 |
| Reliability/Data Integrity | |
| Load/unload cycles | 600 000 |
| Annualized Workload Rate(TB/year) | Up to 550 TB/year |
| MTBF (hours) | 2 500 000 |
| Limited warranty (years) | 5 years |
| Physical Dimensions | |
| Height (max) (in / mm) | 1.028 / 26.1 |
| Length (max) (in / mm) | 5.787 / 147 |
| Width (± .01 in.) (in / mm) | 4 / 101.6 |
| Weight (± 3% ) (lb / kg) | 1.48 / 0.67 |
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