If you are licensed for it you can storage vMotion the VMs- this will allow you to perform this with no downtime.
The other option will require shutting down each VM and Cold migrating the VMs which allows you to move the vms to the new datastore.
If you are licensed for it you can storage vMotion the VMs- this will allow you to perform this with no downtime.
The other option will require shutting down each VM and Cold migrating the VMs which allows you to move the vms to the new datastore.