MTBF, the mean time between failures, is an estimate of how long a hard drive or other storage drive will last before it fails. MTBF is calculated by dividing the number of hours a drive operated in testing by the number of times it failed. The time can range from between 100,000 hours to 1 million hours or more.
When purchasing a new hard drive or SSD, knowing its MTBF is essential for understanding the product’s quality and life expectancy. Here’s a closer look at what exactly it means and why it’s so important.
What Is MTBF?
Simply put, MTBF, or Mean Time Between Failures, is the estimated time it will take for a device to fail. Depending on who you ask (or which company is manufacturing the product), there are a few different ways to calculate MTBF. At its core, calculating MTBF is a simple process of analyzing how long a hard drive, SSD, or other product has been running and averaging that with the number of times it has failed. This will give you the mean time between failures.
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