QoS Scheduling for Networked Storage System

Networked storage incorporates networking technology and storage technology, greatly extending the reach of the storage subsystem. In this paper, we present a novel Quality of Service (QoS) scheduling scheme to satisfy the requirements of different QoS requests for access to the networked storage system. Our key ideas include breaking down the requests into appropriate chunks of smaller sizes and taking the network characteristics into consideration such that 1) each session channel has smoother data access, 2) resource requirements such as buffer usage are reduced, and 3) more urgent requests can preempt a less urgent request. Our experimental results show that our scheme is effective in obtaining these goals.