Synology DiskStation Manager for Dummies
Deficiency of upgradeability just isn't a huge disadvantage thinking of not quite a few users go this route, and for what it's value, 2GB of RAM is over enough to manage the net-dependent OS and many of the software utilities you will get.If you use SSD storage, upgrading to 10GbE Ethernet is a must. But a faster network port is usually far better