Saturday, June 14, 2008

All systems down - UPS replacement ahead

Friday the 13th we had to bring all our network systems down (websites, internal shares, email and Internet access) in order to clear out the computer room for a UPS system replacement on the 14th.

The big gray box in the back of the room is the old 4,000 pound UPS (battery back-up) system. It started failing a few months ago. Turns out they have an expected life span of 10 to 12 years. Ours lasted a bit longer, but not by much.

The UPS system provides short-term emergency power in event of a power failure. It gives us enough time to gracefully shut down all the servers in order to prevent corruption of data. It is not designed as a long-term backup system. Computer room sub-floor with power cables

If all goes as planned, Saturday the 14th the old UPS system will be hauled out and the new rack-mounted system will be installed. Time permitting, the equipment racks and computer room furniture will be rolled back in.

Power cables from computer room equipment
Sunday the 15th will be a frantic race against the clock to reattach all the power cords and cables and then power on the network and equipment (in the correct order) to bring everything back up.

As it took over 3 hours on Friday just to pull out all the cords, Sunday will be a very full day.

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