At 11pm tonight, we intend making a small config change to the UPS system acting as the backup for one of our more important racks here in Huntingdon. Whilst moving this from bypass should not affect the rack in anyway, we are however advising customers that there may be a window of downtime of a maximum of 30 minutes if this fails to switchover correctly or causes other cascading issues.
Services that could be affected:
Merula website & associated sites.
A small number of servers hosted in Huntingdon.
To make sure that this is the maximum downtime, we have current backups of the configs of the core routers here as well as suitably specified and tested fall-over units available to use should any of the live ones fail to come back up for any reason. Again, we have no reason to expect this to be a problem but want to ensure that worst case is prepared for.