I have an old Synology DS107...
I would like to have a NAS specific OS...
Synology uses their Disk Station Manager (DSM) as the operating system.
this link should download DSM_DS107_1639.pat
for your specific Synology DS107:
https://www.synology.com/en-us/support/download/DS107#firmware
To install the DSM operating system, you need the Synology Assistant
which can be gotten from here:
https://www.synology.com/en-global/support/download/DS107#utilities
Easiest way:
- need a spare windows computer you can install Synology Assistant on
- once synology assistant installed, run a wired ethernet cable directly from your windows pc to the DS107 NAS (or keep the network as simple as possible),
- power on both, run synology assistant on the windows pc, it should recognize the DS107 on the network
- put new disks in the DS107 and/or push it's reset button first, it will reset out any network config on it and it will try to network via DHCP (which it won't get from your windows computer) and use become some arbitrary 169.254.x.x ip address. Set you windows pc to a static IP of 169.254.1.1 with netmask of 255.255.0.0 to facilitate this first connection to the DS107 with Synology Assistant.
- synology Assistant will allow you to install the DSM_DS107_1639.pat onto the DS107.
fwiw, synology hardware and probably any NAS for that matter is just a basic computer with a network port and disk controller, probably any linux would install onto it and provide some kind of computer functionality, but it would be up to you then to configure everything in linux to make network attached storage to happen. The Synology DSM operating system is fundamentally linux.