Difference between revisions of "Raid on Linux"
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== Motivation == |
== Motivation == |
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| − | While they have gotten significantly more reliable in the last years, hard-disk are still the parts that most often fail in computers and they contain all your data. Thus you should always have a good and recent [[Backup]]. |
+ | While they have gotten significantly more reliable in the last years, hard-disk are still the parts that most often fail in computers and they contain all your data. Thus you should always have a good and recent [[Backup]]. But if your server crashes because of a defective hard-drive this is still bad as it means the server is not available and you might need a significant amount of time to restore your data. What we want is a system that can tolerate the failure of a disk and still work. This is what RAID is for. |
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| + | == Software vs. Hardware RAID == |
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Revision as of 12:21, 30 October 2020
Motivation
While they have gotten significantly more reliable in the last years, hard-disk are still the parts that most often fail in computers and they contain all your data. Thus you should always have a good and recent Backup. But if your server crashes because of a defective hard-drive this is still bad as it means the server is not available and you might need a significant amount of time to restore your data. What we want is a system that can tolerate the failure of a disk and still work. This is what RAID is for.
