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Adhost Blog

Fisher Plaza East Power Maintenance – August 01, 2009

Date: 08/01/2009
Start Time: 10:00 PM PDT
End Time: 6:00 AM PDT on 08/02/2009
Customer Impact: None Anticipated

Description:

This maintenance window is Phase 2 of 3 in the process of restoring normal power to Fisher Plaza East, delivered from Seattle City Light and backed up by generators within the facility. During this phase, Fisher engineers will install a temporary connection to Seattle City Light. This means Adhost’s East data center will be receiving power from the City with redundant backup generators outside of the building until Phase 3 is completed and permanent power is restored to the facility.

During this event, there will be periods during which Adhost’s East data center cooling infrastructure is running in a degraded mode. Specifically, Adhost has 4 separate Computer Room Air Conditioning (CRAC) units in our East facility. Two have power fed from one riser and two are fed from a different riser. During the maintenance window, power will be interrupted several times to each of the risers that feed the CRAC units for approximately 30 minutes each.

The Method of Procedure for this event requires that a cool down period be observed between each of the riser outages. So, Adhost’s East facility will be pre-cooled to 65 degrees before the event and then re-cooled to 65 degrees between each riser outage. This ensures that the data center temperature will remain well within tolerances throughout the maintenance window.

We do not anticipate any loss of service during the window. However, if you would like to be here during the event, please arrive at Fisher Plaza no later than 9:00 PM on 08/01. During the maintenance window access to the building will be restricted, so anyone arriving after 9:00 PM may not be granted access into the facility until the end of the maintenance window.

Adhost’s Plaza West facility will not be affected by this event, as it has been unaffected throughout the recent power issues localized to the Fisher Plaza East building.

Thank you for your patience and understanding during this event. If you have any questions or concerns please contact our Technical Support Department at (206) 404-9500 or support@adhost.com.

Regards,

Michael Smith

–
Michael K. Smith – CISSP, GISP
Chief Technical Officer – Adhost Internet LLC mksmith@adhost.com
w: +1 (206) 404-9500 f: +1 (206) 404-9050
PGP: B49A DDF5 8611 27F3 08B9 84BB E61E 38C0 (Key ID: 0x9A96777D)

Posted by Michael K. Smith 1:49 pm July 29, 2009

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