The recent change in BorgBackup 2 has removed the server-side append-only feature, prompting discussions about migration options to other backup solutions. Users have noted that Restic offers a similar feature when using the rest-server backend. It can be configured to run in an append-only mode, which helps secure backups against ransomware and unauthorized file modifications. Some users are considering alternatives such as Duplicacy or exploring comparisons between Borg, Restic, and Kopia, which all share similar functionalities. There are also discussions around best practices for securing backups using permission configurations, filesystem features like ZFS snapshots, and the necessity of strong authentication measures.