There's a theoretical risk of MitM attacks for devices reachable over self-signed certificates, but if someone breaks into my (W)LAN, I'm going to assume I'm screwed anyway.
I've used split-horizon DNS for a couple of years but it kept breaking in annoying ways. My current setup (involving the pihole web UI because I was sick of maintaining BIND files) still breaks DNSSEC for my domain and I try to avoid it when I can.
All you really need is a bunch of disk and an operating system with an ssh server. Even the likes of samba and nfs aren't even useful anymore.
I see the traditional "RAID with a SMB share" NAS devices less and less in stores.
If only storage target mode[1] had some form of authentication, it'd make setting up a barebones NAS an absolute breeze.
[1]: https://www.freedesktop.org/software/systemd/man/257/systemd...
Given that the docs claim that this is an implementation of an official NVMe thing, I'd be very surprised if it had absolutely no facility for recovering from intermittent network failure. "The network is unreliable" [0] is axiom #1 for anyone who's building something that needs to go over a network.
If what you report is true, then is the suckage because of SystemD's poor implementation, or because the thing it's implementing is totally defective?
[0] Yes, datacenter (and even home) networks can be very reliable. They cannot be 100% reliable and -in my professional experience- are substantially less than 100% reliable. "Your disks get turbofucked if the network ever so much as burps" is unacceptable for something you expect people to actually use for real.
Whereas Synology or other NAS manufacturers can tell me these numbers exactly and people have reviewed the hardware and tested it.
I can buy a NAS, whereby I pay money to enjoy someone else's previous work of figuring it out. I pay for this over and over again as my needs change and/or upgrades happen.
Or
I can build a NAS, whereby I spend time to figure it out myself. The gained knowledge that I retain in my notes and my tiny little pea brain gets to be used over and over again as needs change, and/or upgrades happen. And -- sometimes -- I even get paid to use this knowledge.
(I tend to choose the latter. YMMV.)
For example my ancient tplink TL-WR842N router eats 15W standby or no, while my main box, fans, backlight, gpu, hdds and stuff -- about 80W idle.
Looking at Synology site the only power I see there is the psu rating, which is 90W for DS425. So you can expect real power consumption of about 30-40W. Which is typical for just about any NUC or a budget ATX motherboard with a low-tier AMD-something + a bunch of HDDs.