I'm rather new in this world of SAN devices/ESXi hypervisors and stuff.
Some years ago we had had physical servers with internal storage connected to a USB/LAN UPS and whenever he had a power loss we would first trigger a clean server shutdown to preserve data integrity and then trigger a UPS shutdown altogether (to preserve UPS batteries). Everything automatically of course.
Now, we are trying to accomplish a similar task on our new setup, comprised from a Dell Powervault ME4024, connected over FC to two physical hosts running ESXi. The entire cluster is protected by an (over-dimensioned) Eaton 93PS 8kVA network-connected UPS. This is also a different beast to what we had back in the day... It can also provide juice for more than an hour in case of power failure.
In any case, we have found out that we can trigger automated shutdowns of the ESXi hosts (including VMs of course). What we are unable to figure out, is how we can trigger a Powervault shutdown at the end of the entire shutdown procedure. Can anyone give some pointers on how to accomplish that in an unattended manner?