I would be intested the to hear what issues you had with stablebit scanner
For some reason with DrivePool, Emby (and/or Plex), TightVNC (Used for remote control) and StableBit's scanner all running at the same time on a pretty powerful Windows 10 (Started with Windows 7) computer the computer would simply freeze up and, sometimes, even crash. If I dropped any one of the programs the computer became stable again.
After some serious thinking I decided that I did not really need StableBit's Scanner running as its early warning system was pretty much redundant for my usage and really did not add much to the robustness or stability of the system.
Every month or two I do run a scan on all my drives just to see if anything dangerous is happening, so far nothing has ever showed up, but the redundancy built into DrivePool along with the tools built into Windows seems to provide enough protection for my needs.
BTW: My server computer has no other regular duties at all. I do not believe a server should be tasked with other non-server related tasks.
All my drives and the server computer and another computer that acts as a MediaMonkey server are all mounted on a shelf rack that I picked up for free from a local convenience store that was throwing it out and everything is connected to a dedicated UPS with plenty of capacity to run everything for a couple of hours. (So, when I lose power, which happens here in rural Tennessee four or five times a year, I have plenty of time for an orderly shutdown.)
I know that is a lot more than asked for but I plead age. As we get older there is a tendency to ramble and expand on any point we are asked about. It is an attempt to get everything we know out there before it is lost to posterity forever. The value of said rambling can be debated but not really the reason for it.