File System – NTFS
• Fundamental structure of NTFS is a volume
– Created by the XP disk administrator utility
– Based on a logical disk partition
– May occupy a portions of a disk, an entire disk, or span  across
several disks
– Striping, RAID, redundancy, etc.
• All metadata, such as information about the volume, is
stored in a regular file
• NTFS uses clusters as the underlying unit of disk
allocation
– A cluster is a number of disk sectors that is a power of two
– Because the cluster size is smaller than for the 16-bit FAT file
system, the amount of internal fragmentation is reduced