I've read a lot of comparisons with Synology Diskstation. I've been using Synology for 10 years. It was pretty good, but I didn't do anything other than use it as storage and reverse proxy. Tried to get cheaper surveillance camera licenses that Qnap has. It's better than I expected. There are many reviews of poor user interface. I think the UI is fine for me. Lots of fun with lots of customization although I had to do a lot of research to decide on a configuration. I mainly use it for security cameras and video streaming. The memory upgrade was easy. Added 16GB (Timetec Hynix IC) to bring it to 20GB with no issues. I didn't create a PCIe SSD cache because I don't plan to run virtual machines. I've found that there are very cheap PCIe cards that can handle NVMe m.2 storage. I could do it later. No need to buy original expansion card. Hardware wise really better than Synology. I think I'm a bit concerned about security as it's more open to 3rd party software and that might pose a bigger security risk. In any case, I would not put anything sensitive on the NAS. The best security is to keep everything offline. Update: After 2 months I found a problem that I don't like. With a cheap PCIe card for NVMe m.2 storage, I can only use the SSD as a cache. Unable to create Qtier. It also doesn't lend itself well as a cache for a write cache, as it might fail before it's written to my hard drive. This leads me to believe that Synology might be the best option now if you really want an m.2 SSD since it is built into the Synology NAS. Qnap is not cheaper if I need to buy a PCIe RAID card. Well, I guess I can still get cheap surveillance camera licenses. One star deducted for that.
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