So reliability of the other indicators are indicating, that 'AFR (Annual Failure Rate)'.

MTBF is the relationship between the above formula and the AFR will be represented. This decreases the longer MTBF AFR that can be verified. It is widely regarded as a common indicator of HDD < 'MTBF (Mean Time Between Failure)'. Interpretation of the 'average time between failures', which represents the lifetime of HDD, it is often a tendency to think. These days, and HDD production of 500,000 hours MTBF is at least as long as it topped the 2.5 million hours, the number of years to an equivalent of 57 this year to 285 miles across. If you think the life of the MTBF HDD semipnida this figure is meaningless.