Download - NT File Systems
NT File Systems
by Eunice Swinson
Southeastern University
Professor: Mort Anvari
June 3, 2000
Introduction
- Overview of NT History
- Defining a file system
NT History
Developed by Microsoft in early 1980s It was developed to run on top of MS-
DOS operating system Microsoft joined forces with IBM to
create a more powerful DOS NT resemble the UNIX operating system
NT History con’t
Microsoft split from IBM to work on more advanced 3.x version
Sales for Win 3.1 skyrocketed, but sales for NT 3.1 failed
In 1994, cost of PC dropped
Defining a File System
OS using to manage the data on a drive Before installing Windows NT decide
what system to use FAT - File Allocation table NTFS - New Technology File System
Choosing a file System
FAT has four components- boot record, FAT, directories, and data files
NTFS has 64-bit entries and core master file table
FAT is backward compatible with DOS and Windows 95
NTFS is more fail-safe; more secure; and more efficient for large hard drives
FAT
Supported by DOS, OS/2, Windows 95 and Win NT
Can be converted to NTFS at any time Less overhead than NTFS, works best
with hard drives <500 MB Maximum partition size of 4GB
FAT con’t
Does not support file compression No local security available Does not support Macintosh files Does not support NetWare
file/permission during migration
NTFS
Local security is available Supports Macintosh files Supports NetWare file/permission
during migration It supports large-volume drives
NTFS
Only supported under the NT Operating System
Can’t be converted to FAT
NT Security and Permission
Way to control resources user and group accounts
Required logon based on given permission
Two types of of security - local and network
Local governs user to log on where resources are located
NT Security and Permission con’t Permission can be applied to file or
folder Users can access resources over the
network
Other File Systems
Virtual File Allocation Table (VFAT) Network File System (NFS) Virtual Storage Access Method (VSAM) High Performance File System (HPFS)
Using Workgroups and Domains Workgroup are a logical group of computer
and users that share resources Domain is a group of networked computers
that share a centralized directory database of user account information and security
PDC stores and controls database called directory database or SAM
Each computer with a backup directory database is called BDC
References
Andrews, Jean, A+: Certified Computer Technician, Certification Insider Press: Albany, NY, 1998.
Donald, L. and Chellis, James. NT Server 4 in the Enterprise Study Guide, 2nd SYBEX, Inc.: San Francisco, CA, 1998
www.ewweb.com/articles/0399ew01.html and www.Microsoft.com