Don’t buy a synology. For less money you can make a better system. I use a cheap itx board, a used 6600k, Silverstone DS380 and 8x4TB disks of spinning rust and a 256G NVME as my current iteration of my NAS. its basically silent, and runs ubuntu + zfs + shit in containers. Its excellent.
I am however considering 10G ethernet cards for it and my desktop and just doing point-to-point. Not that 1G is too slow for my needs, but because it’d be fun.
Pending fertilizer and pig-treat.