I'm reading the MBTF on a SkyHawk harddisk is 1 million hours, there's about 8765 hours in a year, so the mean time before failure for this drive is.... 1.000.000 / 8765 = about 114 years ?
That's obviously wrong, so how am I to understand this number? They take a million drives and run them for one hour with 0 drives dying within that hour?
👤 369548684892826 Accepted Answer ✓
"...which might lead one to conclude that the specification promises between 30 and 120 years of continuous operation. This is not the case! The specification is based on a large (statistically significant) number of drives running continuously at a test site, with data extrapolated according to various known statistical models to yield the results."