Dear Martfox Customer.
We have received the following information from SOTA regarding plans to replace the power distribution equipment in KSP, please take a moment to read:
“During December, a specialist electrical testing company were contracted to perform a comprehensive analysis of the electrical infrastructure within the KSP. Infrared, ultrasonic and traditional circuit analysis was performed across the supply and distribution network and a report compiled. This analysis was undertaken to confirm the integrity of the electrical design and to ensure that there were no latent issues within the power infrastructure. It also facilitated the planning of any remedial changes that may be necessary to eliminate the possibility of a repeat power outage event of a similar nature occurring in the future. The technical analysis concluded that no critical issues existed. Progress was therefore made to the next stage which was planning the removal and replacement of the damaged post-UPS bus bar infrastructure and implementation of a suitable replacement.
We only recently received final details of the revised design, and instructions have now been issued to the electrical contractors to carry out these works. The new design removes the remaining core 250A and 400A bus bar distribution elements that are currently utilised after the N+1 UPS stacks. The final 100A bus bar distribution system which feeds each row of racks will remain in place, but this will be fed directly from a new 400A master UPS distribution panel.
To complete these works it will be necessary to shut down the power infrastructure so that connections on the UPS and bus bars can be changed over to the new distribution system. To minimise disruption to customers, the shutdown is scheduled to start at 00:15 on Sunday 21st February. A team of 5 electricians will be deployed concurrently to ensure a rapid transfer to the new infrastructure. Because of the scale and complexity of the tasks to be completed the anticipated down-time is approximately 4 hours.
To allow these works to be completed on schedule, we ask customers who wish to have their equipment cleanly powered off, shutdown their systems no later than 15 minutes before the scheduled maintenance starts, as it will not be possible to delay the power down. Once power is restored we will power up all dedicated and colocated servers.
For health and safety reasons, any lockable rack-space customers attending site to shut down equipment will be required to vacate the facility before the electricians commence works. If lockable rack-space customers require ‘remote hands’ to switch on equipment once power has been restored, detailed instructions regarding equipment and power-up sequencing will be required in advance.”
To summarise, window details are as follows:
Date: Sunday 21st Feb 2010
Time: 00:15 GMT
Duration: ~4hrs
Affected: All UK Shared/Reseller Servers
Tuesday, February 2, 2010
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