Surveillance Hard Drive WD Purple SATA 3.5inch 4TB D5520

Latest generation Western Digital 'WD purple' range of hard drives are optimised for the harsh demands of a modern HD multi-camera surveillance system where they will be running 24 hours a day 7 days a week.

Formatted capacity: 4 TB
Form factor : 3.5-inch
Advanced Format (AF): Yes
RoHS compliant: Yes
Performance
Data transfer rate (max)
-Buffer to host: 6 Gb/s
Host to/from drive (sustained): 150MB/s
Cache (MB): 64
Rotational speed (RPM): 5400rpm
Reliability/Data Integrity
Load/unload cycles: 300,000
Non-recoverable read errors per bits read: