Some embodiments are directed to a method, corresponding system, and corresponding apparatus for handling Quality of Service (QoS) for one or more network file shares associated with one or more Network Attached Storage (NAS) servers. Some embodiments may determine an actual value for a QoS parameter for network file shares, through a benchmark test procedure. Some embodiments may assign a QoS policy to the network file shares. Some embodiments may associate the QoS policy with the QoS parameter. Some embodiments may control the QoS policy at the NAS servers. Some embodiments may determine a current speed capability of one or more network interface controllers (NICs) associated with the NAS servers. Some embodiments may also compare the current speed capability of the NICs to the given actual value for the given QoS parameter resulting from the benchmark test procedure.