OSS Architect

I've had to do a couple "power off shutdowns". A problem with the ethernet port of the supermicro mobo, rendered the server unavailable via the normal admin webpage or SSH/telnet. It's a big Norco array of 20 disks, so at some point I just had to "flip the switch". A few other attempts to re-establish connectivity similarly failed. I then did a mobo replacement, so now the ethernet config file for the unraid kernel needs to be changed (I'll use nano on a raspberry pi to do this-reset to default on the USB stick). What should I do or expect when the machine boots? I don't have backups, so if the array comes up damaged, I don't want to do more damage. What are the recommendations for recovering raid integrity at this point?