Time Machine works on file level, so every time a file changes the full file will be backuped. As you‘ve found out it‘s not wellsuited for large files with frequent small changes.

One way out would be to exclude the directory containing your blockchain file from Time Machine and use rsync to do backups.

Time Machine works on file level, so every time a file changes the full file will be backed up. As you‘ve found out it‘s not well suited for large files with frequent small changes.

One way out would be to exclude the directory containing your blockchain file from Time Machine and use rsync to do backups.