Effect of Virtual Techniques in Data Storage Access
Mohammad Reza Ahmadi, Davood Maleki · 2010
Expansion of IT applications creates serious needs for environments with huge storage. In storage systems, capacity and agility are two factors which face limitations. This article evaluates the role of different techniques with regard to the possible methods for accessing to the storage systems. We have prepared three different scenarios using direct, semi-virtual, and virtual attachment models. We have evaluated the proposed models with several workloads including OLTP database, data streaming, file server, Web server, etc. Results of evaluation with different criteria confirm that the virtual technique is a successful alternative for accessing to the storage systems especially in large capacity applications. This technique can therefore be an effective solution for expansion of storage area and reduction of access time. In this way, storage virtualization has the potential to provide high virtual capacity with good scalability as well as a better performance. Results of different evaluation and measurements demonstrate that the full virtual storage technique provides better performance and more agility as well as more effective utilization of the available resources.