If your Synology NAS is in Raid, up-sizing your drives is dead simple.

Pop out one of your current, smaller drives. Pop in a new, bigger drive. Wait for Disk Station to migrate data over to the new drive (note that this can literally take days depending how much data there is). Then do the same with the next old, small drive and the next one until all old, small drives are replaced with new, big ones.

This will work as long as your current drives are not like 24 TB or whatever the upper limit is these days. In that case, you need more bays.

After this is done, move all the data from your externals onto your Synology NAS.

Where can I find the auto reboot setting?

What if you long press power button amd select “lock down”? Does that put it in the same BFU state?

How did your boss respond?

You gotta start somewhere, man

No it hasn’t. Back this claim up with some evidence