O'Reilly logo

Release It!, 2nd Edition by Michael T. Nygard

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

The Change Window

As was the case with most of my large clients, a local team of engineers dedicated to the account operated the airline’s infrastructure. In fact, that team had been doing most of the work for more than three years when this happened. On the night the problem started, the local engineers had executed a manual database failover from CF database 1 to CF database 2 (see diagram). They used Veritas to migrate the active database from one host to the other. This allowed them to do some routine maintenance to the first host. Totally routine. They had done this procedure dozens of times in the past.

I will say that this was back in the day when “planned downtime” was a normal thing. That’s not the way to operate now.

Veritas Cluster ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required