I wanted to give you an official response to your blog post. I’m only in a position to speak about the maintenance announcement you quoted as it pertains to Adhost customers. Every Fisher Plaza East tenant will have a bit of a different take on the event depending upon the configuration of the equipment in their own space. One thing that I can say is that the fundamental cooling systems for Plaza East will not be affected during the window.
Adhost will have two brief periods where we have reduced cooling capacity in our Plaza East data center. We have 4 separate Computer Room Air Conditioning (CRAC) units in our facility. Two have power fed from one riser and two are fed from a different riser. During the maintenance window, power will be interrupted to each of the risers that feed the CRAC units for approximately 30 minutes each.
Before each riser outage, the data center will be cooled to 65 degrees. In the past, we have seen the temperature in the data center raise less than 5 degrees during this type of events. As such, we are confident the temperature in the data center will remain well within tolerances during the event.
The rundown of the event is:
1) Cool data center to 65 degrees.
2) Perform maintenance on Lights and Power Riser – 2 CRAC units off line.
3) Re-cool data center to 65 degrees.
4) Perform maintenance on Mechanical Riser – 2 CRAC units off line.
5) Re-cool data center to 65 degrees.
6) Perform maintenance on Technical Riser – no Adhost equipment affected.
It should be noted that Plaza East and Plaza West are completely discrete buildings with completely discrete cooling and electrical plants serving them. Because of this, our Plaza West data center was not affected by any of the events of the last month, and will also not be affected by this coming maintenance window.
Thank you for the opportunity to respond. If you have any questions please don’t hesitate to let me know.
Michael K. Smith
Michael K. Smith – CISSP, GISP
Chief Technical Officer – Adhost Internet LLC firstname.lastname@example.org
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