Scheduled Infrastructure Maintenance on 02/10/2010 at 00:00 *COMPLETED*

Our data-centre will be carrying out some maintenance which will cause a disruption to some of our shared web hosting, reseller hosting customers.

Maintenance Type: Infrastructure
Expected effect on your service: Servers will lose power, thus websites will be unreachable.
Expected downtime duration: <8 hours (between 4 and 8 hours)
This will occur between 00:00 and 08:00 on Saturday 2nd October 2010 (UK Time – BST)

The following servers are relevant to this message:
Alpha, Earth

– Our data-centre will be enacting our procedures for a controlled power outage. This will happen between the hours of 00:00 and 08:00 on Saturday 2nd October 2010.
– These procedures are being put into action to allow essential repairs to the main power systems.
– As part of procedures for restoration of power there will additional staff on site. They will be checking that all services have power restored and pro-actively investigating any issues reported by the monitoring system. Our data-centre monitoring systems have been configured correctly for our servers in order to achieve full service as quickly as possible after the downtime.

Sequence of Events:
00:00: Power down of servers in the whole data-centre (gracefully) will begin
01:00: Maintenance on the power system will commence
05:00: Scheduled start time for restoring power across the data-centre in stages with staff pro-actively investigating and restoring service to servers if needed
08:00: All servers will be back online

Technical explanation of cause:

The data-centre recently installed a fourth 500kva UPS into the data centre to add resilience and capacity to the power systems. The data centre was designed with this in mind, so the appropriate connections exist on the Schneider UPS Output Panel (that feeds all servers from a common bus-bar) to connect this UPS. During the installation of the UPS, engineers discovered there was a fault with the panel which meant the additional UPS could not be connected. To repair this fault, we need to electrically isolate the panel, as engineers cannot work on the panel while it is live for safety reasons. The manufacturer of the panel, Schneider, is sending a team of engineers to repair the panel so it can accept the fourth 500kva UPS.

We apologise for any inconvenience this may cause, please do not hesitate to contact us if you have any queries or questions regarding this maintenance window.

AR Hosting Solutions.