The Plex Media Server scans and organizes your media, then lets you stream it to all of your devices. It's the central, most important piece of Plex. Once installed, it gets to work scanning and cataloging every piece of media, making it look beautiful and intuitively organized.
From version Plex Media Server 1.14.1.5490 (smb):
See goo.gl/CHv2uD for a list of what’s new.

Additional:
- Configuration could disappear when restarting the device after migrating to external storage
All versions