faq.md

@@ -426,9 +426,9 @@ https://docs.gitlab.com/ee/user/usage_quotas.html#manage-storage-usage
 
 ### Why doesn't disk space decrease despite deletions?
 
-After having done some cleaning, the storage quota can be recalculated on the page Settings -\> Usage Quotas, button "Recalculate repository usage" and wait several minutes to get a refreshed page up-to-date (the result is not instantaneous).
+After having done some cleaning, the storage quota can be recalculated on the page Settings -\> Usage Quotas, button "Recalculate repository usage" and wait 15 minutes to get a refreshed page up-to-date (the result is not instantaneous).
 
-- By default, housekeeping is run on a repository after 10 commits. Then, a grace period of 2 weeks preserves deleted objects.
+- By default, housekeeping is run on a repository after 10 commits. Then, a grace period of 2 weeks preserves deleted objects. ([Source](https://docs.gitlab.com/17.6/ee/user/project/repository/repository_size.html#space-not-being-freed-after-cleanup))
 - You can manually "Run housekeeping". Wait 30 minutes for the operation to complete. Then, "Prune unreachable objects": https://docs.gitlab.com/ee/administration/housekeeping.html#prune-unreachable-objects
 
 Unreferenced LFS files are garbage-collected once a day :