Synology - scheduled/automatic rescan???

[Peter StreamMagic]

I totally agree with Tarnkappe.
The effort it takes to perform a manual rescan is minimal.
I have been using a server performing automatic rescan for a short while and did not like having no control over when a new file was added.
It takes a while before new music is added, which is undesirable if you want to listen immediately and if you first want tag or add some artwork before the files are added, the server (or in the OP his case the NAS) decides when to rescan which also might be unwanted.