Over the past year we introduced you to the Continuous Site Switching program which entails site switching an instance approximately once every six months. We would like to notify you about the latest additions to the Continuous Site Switching program schedule, since you have been identified as an admin for a Salesforce production or sandbox org that may be impacted.
Each Salesforce instance is built and maintained in two geographically separate locations. An instance is actively served from one location (the active site) with transactions replicating in near real-time to the other completely redundant location (the ready site). During a site switch, we swap the locations of your ready and active sites; the ready site becomes the new active site and vice versa.
This program allows us to continue to provide you with high availability of our services as we improve our site switching operational processes through iteration. Our goal is to reduce the time it takes to site switch so that we may leverage the activity more seamlessly during unforeseen incidents and for long-running maintenances. In addition, many of our customers have an internal compliance requirement that their instances are capable of being served from either geographic locations throughout the year. Continuous site switching satisfies that requirement. For more information, review our Continuous Site Switching article.
Trust has been updated with the planned site switches beginning September 1, 2018 through January 2019, and will continue to be updated as site switches are scheduled.
The current schedule is as follows:
Rescheduled from earlier this year: AP0, NA49, NA73