Hard disk high avalibity

Peter Clapham pc7 at sanger.ac.uk
Thu Jan 20 12:28:22 UTC 2011

> Looks like gsync could do this.
> http://open.gandi.net/
> Cheers, /N
The issue with various syncs are that you need to be there to both 
perform the switch over following a failure and you also need to 
manually take care that split brain is avoided. This is less of an issue 
with a hard fail but a soft fail can be more problematic.

Using DRBD is a standard config with (the rightly corrected) pacemaker. 
This setup will take care of soft fails and auto failover for you if you 
configure it to use a quorum device. All details are available in the 
initial link

Good luck


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