joshuaboniface/raidisnotabackup
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Fixed markdown formatting

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Joshua Boniface
2016-09-28 12:25:10 -04:00
parent 4e33da3592
commit 112e622367
4 changed files with 11 additions and 11 deletions
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content/2.md
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@ -5,9 +5,9 @@ weight = 2
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).
2. Failure of the RAID controller itself (especially when using hardware RAID), the computer itself, or the environment (a flood, or fire, perhaps).
@ -15,6 +15,6 @@ RAID protects you against one and only one thing: a disk failure. It does *not*
4. File corruption from bad writes or bit rot (except for ZFS), including whole-volume corruption from administrative mistakes (e.g. =mkfs= on an existing filesystem).
5. Malicious or accidental deletion or modification of data by yourself or another party, including viruses.
The adage is simple: "RAID replicates _everything_, even the stuff you don't want, like the deletion of that file you needed."
The adage is simple: "RAID replicates **everything**, even the stuff you don't want, like the deletion of that file you needed."
For these reasons and more, RAID IS NOT A BACKUP!