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Optimized utilization of disks in storage area network by storage tiering

Due to improved performance, Solid State Drives(SSDs) with the combination of hard disk drives (HDDs)are receiving high interest in industry as well as academics. This has caused reduction of operation costs. Hybrid storage architectures are different in the way of integrating SSD's with traditional HDD-based storage stack. It is expected by the storage systems of enterprise level to supply access at a faster rate and a high input/output per second i.e. IOPS that too at a very low price. Most of the time, these devices are unpredictable as workloads change over time. In such situations, tiering proves to be a best solution, which is profitable and provides a solution of higher performance. However, it fails in detecting the input/output which are in sequence as they are big and occupy large space in faster tier. In our proposed idea, we try to identify the workloads that are sequential write allocating them beneath instead of upper tiers and detecting random I/Os, thereby making optimized utilization of disks and making it more economical.