|Since you are an admin of a Salesforce org on the EU4 instance, we want to inform you that we are performing a site switch on the instance on August 19, 2018.
The maintenance is scheduled on:
Sunday, August 19, 2018, 04:00 – 05:00 UTC
Performing this site switch will help to ensure that you continue to receive the same levels of performance you have come to expect from Salesforce.
After this site switch, your active instance location will be in our London data center and your ready instance location will be in our Frankfurt data center. Your instance name will not change.
During the maintenance, your instance will be available in read-only mode. This means that during this window, users can’t add, edit, or delete data on their org(s). For more information on what read-only access allows, see our Read-Only Mode Overview article.