Posted By Rich Miller On November 4, 2010 @ 4:39 pm In Downtime | 3 Comments
About 3,000 servers at Montreal web host iWeb experienced an outage last night after a fire near the iWeb-CL data center prompted the company to shift the facility to generator power. All three generators started properly, but one of the transfer switches failed. Once UPS power was exhausted, a third of the data center wound up without power.
Power was restored in about an hour, but at least 450 dedicated servers failed to restart properly and needed manual attention, according to the account of the incident on the iWeb blog . As of Thursday afternoon, the last of the affected servers were being brought back online.
The iWeb event was the fourth significant data center power outage this year in which an automatic transfer switch (ATS) failure was cited. When operating correctly, an ATS switches a facility’s electric power source from the utility grid to backup power, usually supplied by a diesel backup generator. Here’s a recap of this year’s incidents:
“We suspect the transfer switch control logic has been disrupted by the kind of power outage (the fact that it was related to a fire nearby),” iWeb said on its blog, adding that it was still investigating. “Generator tests were completed successfully yesterday (Tuesday 2/11/2010) without load and successfully with full load last week (26/10/2010) with no indications of any potential problem. We run generator tests each week in order to prevent unplanned issues.”
Article printed from Data Center Knowledge: http://www.datacenterknowledge.com
URL to article: http://www.datacenterknowledge.com/archives/2010/11/04/transfer-switch-glitch-kos-iweb-customers/
URLs in this post:
 iWeb blog: http://blog.iweb.com/en/2010/11/incident-power-distribution-data-center-cl/5978.html
 Jan. 28: http://www.datacenterknowledge.com/archives/2010/01/28/transfer-switch-cited-in-navisite-outage/
 March 16: http://www.datacenterknowledge.com/archives/2010/03/16/codero-addresses-lengthy-power-outage/
 May 12: http://www.datacenterknowledge.com/archives/2010/05/13/car-crash-triggers-amazon-power-outage/
 Rich Miller: http://www.datacenterknowledge.com/archives/author/richm/
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