Switch over of power feeds from B only to A+B
Up to 10 minutes
Following the ‘B’ feed power failure on 13/03/2012 - failover switches were moved to the ‘A’ feed.
As the ‘B’ feed has now been repaired, all affected servers must now be moved back to the ‘B’ feed. This means powering down the switching equipment and checking routes propagate correctly afterwards.
Downtime should be minimal during the swap - but there will be a loss of service.