"04-26-15: Hevac1
You stated what you backup to a 1TB HDD. What is the size of the Synology NAS. I do not use any backup software for my Western Digital 12TB Raid5 DX4000 NAS. I copied the music files directly to 3 4TB USB My Books external drives ($139.00 each) and store them away from my house. I do not compress my music library. This way if things change like a different Raid controller or playback system all will be compatible. It takes more time but well worth it."
That's a good way to do it. I wouldn't change anything.
"04-18-15: Jtwrace
No, they will not. However, once you get your old or new Synology system going you can transfer all the data. You should also backup all the music files onto a drive. If you setup that backup within DS you can view/use all files without an issue. The format of that drive will need to be ext4."
I don't believe Windows or Mac can read ext4. I assume you need to use Linux?