How can I get the following information from vCenter
1. Are all VMs upto date with VMware Tools?
2. Are all ESXi running latest patch levels?
3. Compatibility of all ESXi servers (5.1) to 5.5 for upgrade?
4. Correct way to clean up powered off VMs?
5. What does maintenance schedule of ESXi servers comprise of?
Advise would be appreciated. Thanks.