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JoomlaWatch Stats 1.2.5 by Matej Koval

 
2008.12.17: Resolution to Power Outage
It has been found, with the help of vendor engineers and different monitoring devices, that the root cause of the problem was the local power company, TECO. The problem is that we are not being supplied with the 480V of power from our two feeds. Instead, we are being provided a fluctuating source of power, which is not unheard of, but to the degree of over 60V in variance. This has caused our UPS systems to kick on continually to cover what it sees as a brown out. This has burned up batteries in several strings that are tied to both primary and redundant UPS systems. We have replaced the bad batteries, and now are fully aware of the actual cause for our continued plight. We have also engaged TECO to have them work to rectify their issues so that this will not be a recurring issue. Please direct all additional questions to support@sagonet.com, and we will answer them to the best we can. We thank you for your patience and understanding while we work to get this resolved. Sincerely, Sago Networks Engineering Team
 
2008.11.28: Tampa Outage

Date: 11.28.2008

Time: 9:00am EDT

Location: Tampa, FL

Summary: At 8:53am the UPS system received an anomalous reading from a faulty breaker in our Power Management Modules (PMM) in our data centers.  The UPS system did it's job by shutting down the PMM's thus preventing further damage.  We found and replaced the faulty breaker and reset the PMM's.  Power was restored at 9:45am we began the process of bringing the data centers back online.

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2008.08.15: Tampa Outage

Date: 08.15.2008

Time: 2:00pm EDT

Location: Tampa, FL

Summary: As part of our monthly maintenance routines of testing the electrical auto fail-over system from utility power to u.p.s. to generator at 2 p.m. today, August 15, 2008, we experienced a fault in battery bank (a). This resulted in a ten second outage while power was being restored to the u.p.s. The redundant UPS did not pick up the load as a result of the PMMs claiming an overload fault, thus dropping the load entirely. As a result, we implemented our testing and restoring procedures. This encompassed thoroughly all battery and connections in replacing faulty unit. Upon completion a rollback testing was conducted from generator to utility power. The rollback procedure to u.p.s. and generator was a success. A final rollback to utility power was completed at 3 p.m. If you have any concerns, please contact your sales associate or one of our technical staff. You may also log on to our portal to log any concern that needs to be addressed.

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2008.08.06: Tampa Outage

Date: 08.06.2008

Time: 08:30pm EST - ???? EDT

Location: Tampa, FL

Summary: As a follow up to the unexpected power outage on Sunday August 5th Sago presents this followup: Around 7pm on August 3rd there was what can only be described as a power surge, during an intense lightning storm in the area of Sago’s Tampa data-center. When the power incoming from the power company was interrupted by the surge, the load was automatically failed over to the UPS battery backup system. At this time, a failure occurred (probably as a direct result of the power surge) which disabled both the primary and secondary UPS battery bank systems. This failure caused permanent and unrecoverable damage to several of the batteries in the battery bank system. On Monday August 4th, when electricians were able to identify and isolate the problematic batteries that were the weakest links, maintenance persons were tasked with replacing these large 300lb batteries. The replacement of these faulty batteries is now completed and has restored the full capacity of the UPS backup systems. Follow up checks to all the UPS batteries are part of Sago's regular maintenance routine and load tests on the UPS system and generators will be performed as normal. During the 10-20 second power outage, the generator would have usually picked up where the local power company failed, however, the interruption to power which did affect DC1 and some of DC2 had already occurred before the generator had time to do its job. The power from the local power company did come right back up and we have remained on the local power company with the generators in standby mode in case of further failure. This power failure by act of nature was very unfortunate with 3 systems failing including local power, primary UPS, and redundant UPS battery banks simultaneously. We have had regular tests of the batteries in place and load tests of the UPS system, but this was unpredicted due to the power surge being the cause.

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