Creating a Pre-Maintenance Check of inventory, hosts, datastores and VMs

A High Availability 2 Data Center vSphere setup was recently made available to us running v5.5

I am super excited to learn this stuff, recently the DCenter Group performed maintenance and we lost some of our production VMs, we were able to add the vmdks back into inventory but my question is - without actively counting and hunting datastores - is there a way to;

perform pre-maintenance checks, aside from system and looking at the count of DStores, Hosts and VMs - Could I pull a system log per data center with VM, which host they land on and what data stores they tie to? sort of a pre-maintenance verification that could be re-run and verified against.

Maybe export system logs?

Thanks all,