There have been several instances in which our branch offices have lost power, and upon rebooting, our switches lose their configuration. The switches run version 12.3R6.6.
I would appreciate some assistance in developing a best-practice approach to this issue so that we can be more proactive in the future.
Sounds like you might be missing the snapshot process. The snapshot makes a backup copy of both the OS and configuration so if the drive is corrupted during a power event all is still there.
request system snapshot slice alternate