Add a hint on sleeping computer in the FAQ

docs/faq.rst

@@ -185,6 +185,12 @@ This is not a problem anymore.
 
 For more details, see :ref:`checkpoints_parts`.
 
+My machine goes to sleep causing `Broken pipe`
+----------------------------------------------
+
+When backing up your data over the network, your machine should not go to sleep.
+On macOS you can use `caffeinate` to avoid that.
+
 How can I restore huge file(s) over an unstable connection?
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