When you suspend a VM, its current state is stored in a file on the default storage repository (SR). This allows you to shut down the VM's host server and later, after rebooting it, resume the VM, returning it to its original running state.
For VMs in a pool, you can normally choose where to resume them. Your choice of server depends on how the VM and the pool are configured:
When a suspended VM has been successfully resumed, its status indicator changes to in the Resources pane.
Select the VM in the Resources pane and then click Resume on the toolbar.
Alternatively, do one of the following:
In a WLB-enabled pool, this will start the VM on the optimal server.
In a pool without Workload Balancing configured, this will start the VM on its Home Server, or on the first available server, if no Home Server has been set or if the nominated server is unavailable.