Why does my instance change whenever I refresh my sandbox?
|Knowledge Article Number||000229510|
Please note that there are several different instances that your Sandbox may be on: CS1, CS2, CS3. It is important to know that the instance in which your Sandbox resides is subject to change when a refresh is performed. At the time of a refresh, an instance will be selected for your Sandbox. Your refreshed Sandbox may appear on a different instance, and have a different URL after it is refreshed.
For example, the bold portion in the URLs below indicate which instance your sandbox is on: