Hi guys,
many thank for your your reply.
But my doubts still persist:
1) you are suggesting to use HA: for what I have understood, HA has a shared location for VM location. This is the problem:
When a virtual machine in the host A is disconnected from the network baecause under maintenance (that includes e.g.: windows update and so on).
how can the same machine on host B runs if they share the same files?
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Therefore, I am trying to explain the steps as example:
SCENARIO:
2 Hosts:
HOST A (VM1 with Windows Server 2008): production VM (The official production host)
HOST B (VM1 with Windows Server 2008): it is a exact copy (Including IP and machine name), to be used in planned maintenance or VM1 HOST A fault (this host is used only during planned maintenance or fault)
now the step during planned maintenance:
step 1 (time 1)
HOST A, VM1 running in production
HOST B, VM1 idle (switched off)
Step 2 (planned maintenance: windows server 2008 updates that requires reboot) (Time 2)
HOST A: VM1 now is disconnected form the network to allow update and reboot
HOST B: VM1 now connected to the network in production to allow the production carry on working
Step 3 (VM1 Host A is now updated and rebooted) (Time 3)
HOST B: VM1 is disconnected from the network
HOST A: VM1 is now connected to the network for production
HOST B: VM1 is being updated (copy of the VM1 HOST A).
The steps outlined above is the flow during planned maintenance.
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I am using the above strategy to allow the production is on when the VM1 HOST A is being updated.
I am very glad to have some suggestion on which vmWare product accomplish the above requirements (steps listed).
Many thanks