Abstract: Methods and systems for managing access to a distributed storage systems include storing a total bandwidth utilization amount allocated to each of a plurality of client devices and a current bandwidth amount utilized by each of the plurality of client devices. An actual bandwidth amount utilized for servicing one or more requests received from a plurality of client devices over a network is monitored and an expected bandwidth utilization amount for servicing a request to access a distributed storage system having a plurality of storage devices interconnected over a network, received from respective ones of the plurality of client devices is determined. The client device transmitting the request is either permitted or denied access to the distributed storage system based on a function of the expected bandwidth utilization of the request relative to the total bandwidth utilization amount allocated to the requesting client device.

Abstract: A Reed-Solomon (RS) coding system is provided that can employ an RS code of varying correction power, and which can maintain a small area requirement. The Reed-Solomon coding system can include an RS encoder and an RS decoder. Both of these components can be implemented using primarily constant multipliers rather than more area-consuming general multipliers. For example, the programmable encoder can be realized by implementing polynomials with constant coefficients rather than variable coefficients, and a Berlekamp-Massey algorithm performed by the decoder can be realized using a serial implementation. To further reduce the area of the coding system, hardware sharing can be utilized between the RS encoder and the RS decoder.