TY - JOUR AU - Nikolow, Darin AU - Slota, Renata AU - Lakovic, Danilo AU - Winiarczyk, Paweł AU - Pogoda, Marek AU - Kitowski, Jacek PY - 2012/07/09 Y2 - 2024/03/29 TI - MANAGEMENT METHODS IN SLA-AWARE DISTRIBUTED STORAGE SYSTEMS JF - Computer Science JA - csci VL - 13 IS - 3 SE - Articles DO - 10.7494/csci.2012.13.3.35 UR - https://journals.agh.edu.pl/csci/article/view/36 SP - 35 AB - Traditional data storage systems provide access to user’s data on the “best<br />effort” basis. While this paradigm is sufficient in many use cases it becomes<br />an obstacle for applications with Quality of Service (QoS) constraints. Service<br />Level Agreement (SLA) is a part of the contract agreed between the service<br />provider and the client and contains a set of well defined QoS requirements<br />regarding the provided service and the penalties applied in case of violations.<br />In the paper we propose a set of SLA parameters and QoS metrics relevant<br />to data storage processes and the management methods necessary for avoiding<br />SLA violations. A key assumption in the proposed approach is that the underlying<br />distributed storage system does not provide functionality for resource or<br />bandwidth reservation for a given client request. ER -