LeahSo, here are my tips:
+ Don't run an instance for people or a community you don't know.
+ Don't run an instance if you don't have admin experience yourself and don't have a motivated and experienced friend who wants to run the instance together with you.
+ Don't run multiple instances.
+ Don't run an instance for more than 100 people if you are a single admin without admin experience. (If you still think it is a good idea. And a single user instance can be a good idea, for example.)
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