If you set up symmetrical cluster in conjunction with DAOS enabled on all members you will find out that missing nlos files are not automatically repaired.
This only happens when a database was missing on a cluster member and repair pulls a new replica.
This does not happen when the NSF is already there. If your databases grow large it might not be a valid option to delete affected NSF files and simply let repair fix that by pulling a new a huge replica.
If nlo files are missing for a specific database, you can check missing files with
"tell daosmgr listnlo MISSING <filename>".
But unfortunately there is no command for fetching missing nlo files from a cluster member (donor server).
Please add support to the repair task to fix missing nlo file like the existing
repair file <file> <server>
eg something like
repair daos <file> <server>
Or even as an option to "repair all" as documentation already suggests "repair all - Scans all monitored folders for missing database files and associated DAOS objects, similar to the AutoRepair task".
https://help.hcltechsw.com/domino/10.0.1/sym_cluster_repair.html