03-05-2015, 04:31 PM
The MTBF for that drive is 750000 hours at 2400 hrs/year operation, with MTBF noted to be lower for high heat environments. You've been running about triple the expected operation time, which would bring MTBF down to 250000 hours, so you're at about 10% of the MTBF. Throw in a significant heat factor and you'd probably be at one end of the range of statistical failure frequencies. Bad luck, but not that unusual. It seems that my family has one drive fail about every 3 years. On my ReplayTVs, which had drives that ran constantly the failure rate was much higher.