Sounds like you don't have a UPS on the system and the power gets restored enough to start the upload of the database and drops out. You are not getting constant power. If you power off the systems and restore the power after the storm, do they load correctly? If they do invest in a $125.00 APC unit. A power surge can also come thru the co lines. Add surge/lightning supressors to the RJ21x and make sure the system is grounded