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December 19, 2014

SSD Alignment: Why you should quickly benchmark every SSD

A quick example of why one should quickly benchmark every SSD to ensure proper setup and alignment
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December 9, 2013

Storage Reliability Figures from Backblaze

Backblaze looks at storage reliability across its population of over 25,000 consumer grade hard drives.
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May 30, 2013

RAID Reliability Calculator Update – STH MTTDL Model

An update of the popular STH RAID Reliability calculator fixes a few bugs from previous versions. The new version should be easier to read
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September 4, 2012

Introducing the RAID Reliability Calculator – Simple MTTDL Beta

One of the most requested features we have on this site is for a RAID reliability calculator. Over the past few years, one of the big questions is how can a user get a rough ballpark estimate about which RAID levels are the most risky to implement. About two years ago I published the RAID Reliability Anthology primer which gave a good general primer on what impacts reliability. I used a simple Mean Time to Data Loss model, or MTTDL for short, that simply looks at drive reliability. After publishing that piece, I had several folks that work at major data storage firms tell me that the model was too simple, it did not take into account things such as motherboards failing, RAID [...]

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