Traditionally, Hard Disk Drives (HDD) as a storage technology was widely used in the enterprises. But in the past few years, flash-based Solid State Drive (SSD), which was previously adopted extensively in consumer technology products, has started making its inroads into the enterprise IT environment. The reason why SSD technology started finding application within enterprise IT was because it could deliver much higher performance — that is far greater Input and Output (I/O) data rates — than the conventional HDD. This is because SSD is based on the solid state semiconductor technology unlike HDDs that are spinning disks and lead to noticeable delay in data retrieval. Within the enterprise IT environments, there are always certain business- critical applications that need to have quick response time and are used much frequently than many other non- critical business applications. However, ensuring high performance of the business critical applications over the others has been one of the biggest challenges for the ClOs, as both these apps take the same path of going over the network and access the same back-end storage systems.For home PC and small enterprise network applications, DAS is still the dominant choice, as the low-end requirements for growth in capacity, performance and reliability can be easily addressed by the advancements in HDD and bus technologies. The past few years have seen 2x sequential increase in HDD capacity per year, while maintaining the low cost point of HDDs targeting the personal computer market