During the last couple of ESX 3.5 and VC 2.5 implementations I encountered some weird DRS/HA behavior:
- During the reboot of a VM ESX decided to vmotion the VM, as you can imagine this took a lot longer than normal due to the memory being excessively active.
- When the DRS Affinity Rules in a two cluster node is set to “seperate” two specific virtual machines VMware has a hard time relocating a VM when a host goes into “maintenance mode”. I can imagine why this happens but it’s definitely not something that’s suppose to happen in my opinion. It’s a Admin initiated manual action it should overrule all affinity settings.
So let me hear which weird behavior you noticed with ESX 3.5 / VC 2.5….