HA clusters testing and risks
Posted on 2013-11-15
Can I ask for alow tech breakdown on any risks associated with vsphere HA clusters.
1) i.e. are they pretty simple to configure, is there a much an admin could configure wrongly, can you give some best practice suggestions to look for, or some bad pratice designs/configs to look for etc.
2) Also how on earth do you test this. i..e its not like you have the luxury of pulling down one of your hosts which would probably host many critical guests, so how do you test another host would save the day if one host went down? aside from purposelly pulling down the production host?
3) Do you test the HA cluster works - if so how often? What does the test involve? Do you ever encounter issues - if so what?
4) Are there any tools/scripts that will show issues with your cluster design?