$)$ A sector is a physical limitation set by the harddisk being used. Standard is $512$ bytes. In Windows, the OS writes in blocks of sector sizes called clusters. The cluster size is determined by the OS and filesystem when formatted. NTFS is optimized for $4$ KB clusters but can support up to $64$ KB$.$ Explain, thoroughly, why we choose to write data is large chunks like this when a sector is only $512$ bytes. What are the advantages and disadvantages to using small and large clusters. Discuss your answer in context of read$/$write speeds on a harddisk.