Just bought some shiny new 1TB disks and doing some testing on my NS4300N bought a bit more than a month ago. If anyone interested in some detailed review I could try doing one.
If there is no one interested in NAS review then I might as well skip it .
This is quite a slow NAS as it use the MPC8343 400Mhz CPU.
So far I've found GbE (Jumbo-frame off) performance with newest firmware is 7~12MB/s (Samba) / solid 8.2MB/s (FTP).
It is probably due to both RAID5 parity calculation and large network overhead of standard frame size.
My switch is not Jumbo-frame capable, but I might do direct connection to my NF4 board and activate GbE to test Jumbo-frame performance.
But consider I bought this unit for less than the price of a N2100, I would say it is a pretty good unit.