My webhost had a 24hr service interruption on Monday.
We were not alone, thousands of servers were down because of this service outage. My Webhost shares a data with many Fortune 500 companies and this data center was just in the newspaper for 100% uptime.
We have several sites and servers at this data center and we are very confident with their quality.
Here's exactly what happened.
It started out with massive thunderstorms and lightning on the East coast which created a problem with the connection from the AT&T backbone to the data center. All over the East Coast there were power outages.
They switched to another backbone connection and then the servers had to be rebooted.
Then there was an explosion in the building next door- which didn't affect the data center- but-made it necessary to switch the entire data center to generator power because the firemen turned off all of the electric around the area.
After the reboot -(it's been over a year since the server was rebooted) the server did a hard drive check to making sure that the data was all intact.
This took all night. The important part is that no data was lost during this entire process.
After the server did a hard drive check the server needed to be rebooted again.
And then all was back on-line.