I would really like to incorporate the power readings from the MD arrays so we have a complete view of rack power consumption.
MD arrays are not supported in OMPC.
May i know which data you are looking for?
I upgraded from OMPC 3.2 to version 4. I'm still interested in monitoring MD32/34 hardware RAID arrays in OMPC because we could track events such as failed drives using a single integrated tool.
OMPC is focused on power and thermal management of servers.
I would recommend you to use OME for your requirement of monitoring drive failure events.