With multiple client PCs, we didn't have much luck with the XN3002T NAS. Apparently, the combination of the OS, ZFS filesystem, and weak CPU is subpar since we could not finish our tests with three and more clients because network transfers got stuck. We tried multiple times, but the result was the same every time. The server had an especially hard time with DiskSpd; as you can see with two clients, IOPS is very low.