North American Network Operators Group|
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a.root-servers.net power issue (why there are 13)
The NSI data center housing one of the root servers, a.root-servers.net, lost utility power today. Reportedly an outside utility transformer was damaged. Generators come on-line, and the servers remained up. NSI didn't show any loss of traffic, however a couple of ISP MRTG graphs of ping status did indicate a brief 15 minute network interruption. This may indicate an external issue, i.e. outside of NSI, such as a network re-route or flap. On the followup investigation, folks may want to check if there was a piece of equipment which wasn't plugged into where they thought it was. NSI has several different provider's networks into their building, so a proble with one network wouldn't affect the others. Matrix (average.miq.net) shows overall the combination of the dns-root servers stable, and relatively unchanged. In general, the root-server design is robust; and even if one root-server completely failed, the affect would be minor for several days.