3 options:

• EXT4 (works in other OSs with aditional software)
• NTFS (works in other operative systems)
• ExFAT (works in other operative systems)

dupeGURU or AllDup

unRAID is simpler and easier to manage than TrueNAS but requires a license:

• Basic (6 disks) = 53,10$
• Plus (12 disks) = 80,10$
• Pro (unlimited disks) = 116,10$

Maybe:

1. All programs to download stuff from Internet pointing to the LS220D

2. Use tinyMediaManager or MediaElch or Filebot to organize the downloads

3. Install a DLNA server to share your media

You could also install Jellyfin + addon to watch your movies/series from any device (Kodi included)

Try:

• digiKam
• HomeGallery
• ACDSee Photo Studio Home