Phase Change Memory(PCM) is a new form of Non-volatile memory that has advantages like read access almost as close to a DRAM, write speed about 100 times faster than traditional hard disks and flash SSD, and cell density about 10 times better than any kind of storage devices available today. With these advantages, it is feasible that PCM could be the future of data storage as it has the potential to replace both secondary storage and main memory. In this thesis, we study the current status of PCM in the memory hierarchy, its characteristics, advantages and challenges in implementing the...