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Joshua Boniface 2016-09-28 12:18:46 -04:00
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@ -7,7 +7,7 @@ type = "post"
Having a number of disks in RAID may _seem_ like a backup, especially if you're using a mirror mode. But this is *wrong*! Having a number of disks in RAID may _seem_ like a backup, especially if you're using a mirror mode. But this is *wrong*!
RAID protects you against one and only one thing: a disk failure. It does not protect you against any of the following things: RAID protects you against one and only one thing: a disk failure. It does *not* protect you against any of the following things:
1. Multiple disk failures beyond the RAID level chosen (e.g. both disks in a mirror, or 3 disks in a RAID-6). 1. Multiple disk failures beyond the RAID level chosen (e.g. both disks in a mirror, or 3 disks in a RAID-6).
2. Failure of the RAID controller itself (especially when using hardware RAID), the computer itself, or the environment (a flood, or fire, perhaps). 2. Failure of the RAID controller itself (especially when using hardware RAID), the computer itself, or the environment (a flood, or fire, perhaps).