Abstract

Abstract -In the recent growing IT sector it is important to store the data for future use and maintain those data. IT/storage managers and storage professionals across companies of all sizes face the different critical challenges such as Managing storage growth, Designing, deploying, and managing backup and recovery, Designing, deploying, and managing storage in a virtualized server environment, Designing, deploying, and managing disaster recovery solutions, Storage consolidation, Making informed strategic/bigpicture decisions, Integrating storage in application environments (such as Oracle, Exchange, etc.), Designing and deploying multi-site environments, Lack of skilled storage professionals. In this paper we tell about different types of storage devices available now a days and their performance and limitations. We also discuss evolution of Storage Devices. How they differs from each other's and how effective they are in use and storage.