I am looking to set up an HA Cluster for the purpose of fault tolerance. My questions along with my current setup are below.
VMware ESX Server 3i, 3.5.0
2 Hosts (12 VMs | 6 on each Host | 6 Datastores)
If I create the cluster and move my hosts in the cluster, will there be downtime during the move? Is fault tolerance only available in the HA cluster or is it available in the DRS cluster too. My issue is I only have two hosts and I'm worried that the last host standing wont be able to handle HA if it ever has to be used. Also, I'm a little confused about the fault tolerance feature. If I enable fault tolerance for a specific VM, is the "Clone" VM created on the same host and data-store as the original or on a different host and different data-store. If its created in the same data-store, is the clone the same size of the original VM? I ask because of the storage restraints in my data-stores. Some of my data-stores don't have enough space to create another 700gb guest if it needed to. Any advice would help. Thanks in advance.
(I do plan on decommissioning a few VMs in the near, near future)