What are minimum repos for RHEL 7.9 and 8.4?

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I am currently supporting several offline networks that have RHEL 7 (7.9) and RHEL 8 (8.4) servers. Which are the minimum repos I need to support those servers for security scanning (Nessus)?
Right now I have RHEL 7 base, Rhel 7.6, 7.7, 7.8, 7.9 and then the Satellite stuff for RHEL 7. RHEL 8 is a new requirement.

Can I drop RHEL 7.6, 7.7, 7.8 and pick up the RHEL 8 baseos, and RHEL 8.4 to cover all my bases (Satellite server is 6.11 hosted on RHEL 7)? Or do I need RHEL 8.1, 8.2, etc. and the Satellite stuff for RHEL 8 as well?

Super confusing as to what I really need, and I am trying to keep the content-export file as small as I can (currently at 230GB for the aforementioned repos). Would love to make it smaller.



It appears that you only need the base Repos for each version of RHEL as that covers all sub-versions, or if you only want the updates for a specific version then you can go get that repo instead (it will include all updates for the prior sub-versions as well).