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We are using MongoDB community edition for free of cost in our environment and starting from mongo 4.2 (FCV 4.2) backup feature in mongo cloud manager is only supported for databases running MongoDB enterprise edition which is available as part of MongoDB enterprise advanced subscription and it is paid option.
Upgrading to 4.2 should be sufficient for the next Open edX release, since end of life has not been announced for it.
Dependencies
Mongo upgrade can be done independently from other upgrade projects, e.g. Elasticsearch 7.10 , Django 3.2 Upgrade , etc. We have not identified any other dependencies.
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