howto/drbd.md

 [DRBD](http://drbd.org/) is basically "RAID over the network", the ability to
 replicate block devices over multiple machines. It's used extensively
-in our [howto/ganeti](howto/ganeti) configuration to replicate virtual machines across
+in our [service/ganeti](service/ganeti) configuration to replicate virtual machines across
 multiple hosts.
 
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