I currently have a 10-year old off-the-shelf NAS (Synology) that needs replacing soon. I haven't done much with it other than the simple things I mention later, so I still consider myself a novice when it comes to NAS, servers, and networking in general, but I've been reading a bit lately (which lead my to this sub). For a replacement I'm wondering whether to get another Synology, use an open source NAS/server OS, or just use a Windows PC. Windows is by far the OS I'm most comfortable with so I'm drawn to the final option. However, I regularly see articles and forum posts which frown upon the use Windows for NAS/server purposes even for simple home-use needs, although I can't remember reading a good explanation of why. I'd be grateful for some explanations as to why Windows (desktop version) is a poor choice as an OS for a simple home NAS/server.
Some observations from me (please critique if any issues in my thinking):
- I initially assumed it was because Windows likely causes a high idle power consumption as its a large OS. But I recently measured the idle power consumption of a celeron-based mini PC running Windows and found it to be only 5W, which is lower than my Synology NAS when idle. It seems to me that any further power consumption savings that might be achieved by a smaller OS, or a more modern Synology, would be pretty negligible in terms of running costs.
- I can see a significant downside of Windows for DIY builds is the cost of Windows license. I wonder is this accounts for most of the critique of Windows? If I went the Windows route I wouldn't do a DIY build. I would start with a PC which had a Windows OEM licence.
- My needs are very simple (although I think probably represent a majority of home user needs). I need device which is accessible 24/7 on my home network and 1) can provide SMB files shares, 2) act as a target for backing up other devices on home network, 3) run cloud backup software (to back itself up to an off-site backup location) and, 4) run a media server (such as Plex), 5) provide 1-drive redundancy via RAID or a RAID-like solution (such as Windows Storage Spaces). It seems to me Windows is fine for this and people who frown upon Windows for NAS/server usage probably have more advanced needs.
Because when you start trying to run actual services, the home-user side of it is going to kick in and make is unreasonably difficult to do simple things such as creating a fileshare, managing permissions, getting your services to work through a firewall, etc. All things which are typically just simple text file configs in Linux, or just a few simple commands.
However if you do persevere and get everything working, it's not going to last. Windows is going to decide what's best for you and you will be left trying to figure out what settings were wiped or reverted to default when Windows updated itself without asking.
And then if youre running a server where you want performance, stability, and security, you don't want extra crap running because all those other services that you absolutely don't need will start interfering with the services that you do need. Linux VMs or containers on a hypervisor are very popular because you can spin up multiple lightweight instances of the OS to perform a single or limited set of functions. So if something breaks, that breakage doesn't spill over to the other instances. With Windows, you'd have to spin up a 10GB+ instance each time for this approach because you'd have so much extra stuff you do not need.