File Systems Essay

600 words - 2 pages

Running head: File Systems
File SystemsPOS/421A file system is a method of storing and organizing computer files and that the files are easy to access and find. File systems use hard disk for storage and involve maintaining physical location of the files. Three main file systems to store and retrieve data are FAT, HPFS, and NTFS. Complexity, speed, and ability make the differences between these file systems.The FAT (File Allocation Table) originated in the early 1980s by Bill Gates and Marc McDonald to manage Microsoft's Basic and it was the only system supported by DOS. Three types of FAT systems are: FAT12, FAT16, and FAT32. The numbers at the end of FAT means a size of that system. FAT uses a table to organize and describe the area in which files are stored and they are called clusters. A cluster is a group of a sector on a disk. The FAT file system that would allow a number of table elements in a cluster was measured by a certain number of bits. As the size of hard disk increased over a period, so has the bit size that FAT uses to identify these clusters. The FAT32 is the most used these days. FAT32 can be found on portable media (flash drives, floppy disks, etc). (TechTerms, 2005)The creation of the HPFS (High Performance File System) file system started between Microsoft and IBM 1989. HPFS file system offered better benefits than FAT file system and one of them was that it added automatic sorting to file directories. Directory entries also held more information in HPFS than in the FAT systems. The following improvements included: more efficient use of disk space, better performance, and less fragmentation of the file system. Extended file names were also introduced in the new version. Before the HPFS was released the naming conventions for FAT files was limited to eleven characters and it had none of the security and...

Find Another Essay On File Systems

fucking looping upload submit essay doesn't work when you submit and proceed to the reseearch!!! FUCK!!!!

1394 words - 6 pages called filename using the locate command; this assumes you have already used the command updatedb (see next) updatedb - Create or update the database of files on all file systems attached to the Linux root directory which filename - Show the subdirectory containing the executable file called filename grep TextStringToFind /dir - Starting with the directory called dir , look for and list all files containingTextStringToFindFile Permissionschmod

File system overview - FAT, NTFS, EXT3

3508 words - 14 pages support can also be implemented on Linux and UNIX systems.EXT3Ext3 is basically an extension to ext2 file system, ext3 retains the stability and robustness of ext2 while adding the much needed journal for high-availability. Ext3 is used in Linux systems. Every Linux file system implements a basic set of common concepts derived from the UNIX operating system files are represented by inodes, directories are simply files containing a list of entries

PHP Code

1004 words - 4 pages deployed on any of the web server, operating systems and platforms and one can use it for managing the relational database system. The PHP group allows to the use of this software for free and will give complete source to the user for building, customizing and extending the language for their own use. A PHP on the primary level will act as a filter, it will take input from the file or stream the containing text and outputs on another stream of data

Discretionary Access Control (DAC)

666 words - 3 pages Discretionary Access Control (DAC) Computer security is important in every organization. It covers several areas such as locking the computer room and the computer itself, protecting login accounts with passwords, encrypting network communication lines and use of file protection among others. Whitman (2011) points out that computer system security ensures that your computer does what it is supposed to, even if the users do what they should not

Investigation of Information Systems

2125 words - 9 pages stored time-sheet details; b. retrieves each employee's record from database file; b. calculates the gross salary; c. calculates deductions; d. prints the pay cheques; e. updates the payroll register. 6. Function-Based vs Integrated Information Systems A Function-Based Information System is designed for the exclusive support of a specific application area, such as stock lists and prices, employee payroll

Development of Control and Confidentiality for Database Management Systems

933 words - 4 pages development of simple declarative languages for specifying access control policies. These earlier models and the unrestricted models in particular, introduced some important principles that set apart access control models for database systems from access control models adopted by operating systems and file systems. The primary principle was that access control models for databases should be expressed in terms of the logical data model; thus

Analyzing Windows Memory

1339 words - 5 pages memory even after the file handle is closed by the process. The file pointers are set to zero when this occurs, though, and they cannot be linked to process structures. Current tools to analyze memory dumps of systems running Microsoft Windows usually build on the concept of enumerating lists maintained by the kernel to keep track of processes, threads and other objects. Therefore they will frequently fail to detect objects that are already

Untitled

1084 words - 4 pages file calls Increased functionality in the internet -Customizable time line with tasking 24 by 7 systems availability Customer Need: Meet your commitments - Accurate and timely information Today: Internet (policy and status) Supplier alliances and network management Service pacts Data integrity Tomorrow: ORC Dashboards Customized time line with tasking Supplier linkages to our systems Status screens Fulfillment center Customer

modes of processing

667 words - 3 pages changes indicated by sensors and probes in life-support systems or aircraft control systems. ♦ Pseudo Real-time Processing - Computer records a transaction and more or less immediately updates the master file (not instantly) A delay of a few seconds is quite acceptable for selling tomatoes in Sainsbury's or borrowing a library book, unlike genuine real-time processing. Example - British Airways Booking System. Choice of processing mode &diams

LINUX AND WINDOWS OPERATING SYSTEM COMPARISON

4861 words - 19 pages )standard SVGA-compatible graphics cardserial or PS/2 standard mouse or IMPS/2-compatible USB-mouseWindows XP Professional Minimum Hardware RequirementsIntel Pentium/Celeron 233 MHz Processor or AMD K6/Athlon64 MB Ram1.5 GB Hard Disk SpaceSuper VGA 800x600 DisplayCD or DVD DriveKeyboard and mouseOperating System File ProcessingAll operating systems have some sort of file processing system and file processing systems in general work the same. The

Alternatives of Network File System

4790 words - 19 pages know that your PC has (NFS) operating system for sharing file systems and directories across TCP/IP - based Networks. Network File System (NFS) is a popular network operating system and it’s a distributed file system that allows users to access files and directories located on remote Computers and treat those files and directories as if they were local. For example, users can use operating system commands to create, remove, read write and

Similar Essays

Microsoft Windows File Systems Essay

861 words - 3 pages finally, a file system must make the stored files easy to find and quick to retrieve.A discussion about Microsoft's file system requires a review of the history related to how these file system were introduced and the needs they were trying meet. The Microsoft operating systems have come to dominate the business and personal computer market. As they were beginning with their very first operating system it was necessary for them to develop a file

File Managers In Operating Systems Essay

1995 words - 8 pages The operating system (OS) is a collection of software to control the computer tasks and manage proper utilization of the hardware resources. The basic operating systems are the Linux, UNIX, Mac and Microsoft Windows. There are several and diverse components of an operating system that include but not limited to the file management, security, memory and process management. The following paragraphs present the comparison of basic operating

Comparing And Contrasting The Various File Systems Used By Windows

2897 words - 12 pages AbstractThe purpose of this paper is to analyze, compare and contrast UNIX and Windows 2000 Operating Systems in terms of their current;- Cost- Market share- Hardware requirements- File processing- Programming capabilities- Availability of application software- User interfaceAs a group, Team A has researched, reviewed and discussed the above mentioned Operating Systems (OS). The analysis of our findings will be outlined in detail on how they

Google File Systems (Gfs) And Big Data Technologies (Non Relational Databases)

789 words - 4 pages Google File Systems (GFS) is developed by Google to meet the rapidly growing demand of Google’s data processing needs. On the other hand, Hadoop Distributed File Systems (HDFS) developed by Yahoo and updated by Apache is an open source framework for the usage of different clients with different needs. Though Google File Systems (GFS) and Hadoop Distributed File Systems (GFS) are the distributed file systems developed by different vendors, they