3 ms·
Ask HN: How does Mean Time Between Failure make sense?
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?
- lesserknowndan 4y agoCongratulations. Not only do you not define the acronym you’re asking about, you also kick the letters when you repeat it in your summary.
- seren 4y agoMean Time Between Failure
- dusted 4y agoI thought mean time between failure was a very common term, apologies.
- lesserknowndan 4y agoCan you fix your use of “MBTF”?
- 369548684892826 4y ago"...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." https://www.seagate.com/gb/en/support/kb/hard-disk-drive-reliability-and-mtbf-afr-174791en/ https://www.seagate.com/gb/en/support/kb/hard-disk-drive-rel...