Sectors: hardware-addressable blocks on a storage medium Typical sector size on hard disks for x86-based systems is 512 bytes File system formats: Define the way data is stored on storage media Impact a file system features: permissions & security, limitations on file size, support for small/large files/disks Clusters: Addressable blocks that many file system formats use Cluster size is always a multiple of the sector size Cluster size tradeoff: space efficiency vs. ![]() 2 Roadmap File Systems supported by Windows NTFS Design Goalsįile System Driver Architecture NTFS Operation Windows File System On-Disk Structure NTFS File Compression From the start, the Windows NT File System (NTFS) was designed to include features required of an enterprise-class file system and meet the requirements to implement POSIX To minimize data loss in the face of an unexpected system outage or crash, a file system must ensure that the integrity of the file system‘s metadata be guaranteed at all times, and to protect sensitive data from unauthorized access, a file system must have an integrated security model.
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