All Virtual Servers and a Powercut
Now firstly, this hasn't happened to me fully. But I have experienced a similar problem to what this would cause and was quite lucky to solve it quickly, but there must be a way of doing it.
The scenario all your servers are virtualised, you have 4/5 physical hosts connected through switches via iSCSI or Fiber to a SAN (with all your Virtual HDDS on). The power goes off for about 30 minutes, meaning all your servers and switches and SAN have to be turned off. How do you get everything running again?
I did similar to below:
I then went to a Host, but couldnt login as there was No Domain Controller, or DNS or DHCP. I logged in locally to check the HyperV Cluster status, but I couldnt as I was in on a local account, Windows gives you an error message saying Domain Accounts only basically. I couldn't login with a Domain Account because there was no Domain, no Domain Controllers had come online because the failover cluster had totally failed and now couldn't be restarted due to the above errror.
I looked to see if I could see the SAN through C:\ClusterStorage but it is inaccessible.
What is the process of getting a fully virtualised cluster back online? If your cannot login on the domain, you cannot access the cluster setup or the SAN to start vritual servers and if you don't start virtual servers then you cannot connect to your cluster.
All my virtual servers are set to auto-start, and I could ping between hosts, ping the SAN and ping the switches. I tried rebooting an extra time (cleanly) but this had no affect.
Anyone got the answer to this, I assume there is a set method (which I will be googling soon) because this siituation is realistic and nearly happened to me. I had a physical DC available, although I was planning to Virtualise this tomorrow! Which i now won't be.