Tomorrow, Friday August 31st, between 8 AM and 10 AM our new UPS will be turned up. This procedure requires us to go into bypass mode on the entire UPS system. We will have the backup power generation system running. As always, any power transfer carries a risk of interruption, however we feel confident that this procedure will go smoothly and have no impact on service. We have tested the bypass system recently during our UPS preventative maintenance cycle, and the main power transfer switch is tested regularly and has also been triggered automatically by grid power failures a few times over the past year so we're confident in its operation.

We will post updates to this page prior to, and after the conclusion of the UPS turn-up.

Uptdate: 14:15 PDT

We have completed the UPS infrastructure work and are back to normal operations. Our power system performed as expected and there were no interuptions to any of our systems.

During this maintenance, our generator provided power for the datacenter for 3 hours and 44 minutes. This consumed approximately 150 gallons of the 5000 gallons of diesel fuel we have on site.

Our electrical feed is now backed-up by 4 independant strings of batteries and two parallel UPS modules. Output is 450 KVA or 360KW for 15 minutes (the generator supplies power to the UPS system in the first 15 to 20 seconds after a power failure from the public grid) of UPS runtime.

On Wednesday, September 5th we will be provisioning two new PDU's (Power Distribution Units). This activity has no potential for disruption and will simply increase the amount of power availabel to distribute in the datacenter.