Scheduled Power Maintenance

On Sunday December 21st we will be performing a scheduled power maintenance.  The specific time will be updated soon.  This maintenance is not expected to affect any servers or services located at our self-hosted data center.  It is a necessary maintenance to update a transfer switch on one of the main power transformers at our building.
We have done previous tests using a backup generator to operate our servers and network hardware and expect to switch over to our backup power generation system shortly before power is taken offline.
We expect the duration to be approximately 2-4 hours.
Update: As of 11am this maintenance is completed.