@honest1 you could consider storing your music files on an external hard disk or network server, so it is separate from both your music server and from your computer. That way, if you decide to change music servers that has nothing to do with your ripped music, and if your main computer crashes or needs to be upgraded, you can do so without it having any impact on your saved music files.
We're doing something similar ourselves, with music ripped from an iMac onto a Synology NAS running Minimserver. The LUMIN network streaming hardware loads and plays the music directly from the NAS, even if the iMac is turned off. You can also get a LUMIN L1 NAS that is preconfigured to serve music files.
Many of the other network streamers will support similar setups, even some of those that also have internal hard disks (although in that case you won't be using the network streamer's internal hard disk). So you do have options.
The other benefit to using something like a NAS is they can be set up with RAID which protects against data loss in the event of a hard disk failure. So you won't have to re-rip all your files. It won't prevent loss in the event of a catastrophic disaster, or if your computer gets infected by malware that deletes files, but it's better than a typical setup.
As @david_ten said, getting help from a local dealer or the manufacturer could be your best bet.
