File and Disk Management

Monitoring System Activities

System performance	A user or administrator can check to see whether the computer or network is getting overloaded. Changes could be made to the way tasks are allocated or maybe a shopping trip is in order! System performance would include response time(how long it takes for the computer to respond when data is entered) and CPU utilization(comparing the time the CPU is working to the time it is idle.)
System security	Some system security is part of the operating system, though additional software can add more security functions. For multiple users who are not all allowed access to everything, there must be a logon or login procedure where the user supplies a user nameorIDand a secret password. An administrator must set up the permissions list of who can have access to what programs and what data.

Keeping track of what files are where is a major job. If you can't find a file, it doesn't help to know that it is safe and secure somewhere. So an operating system comes with basic file management commands. A user needs to be able to create directories for storing files. (Dumping everything in one pile soon becomes the needle-in-the-haystack story.) A user needs to copy, move, delete, and rename files. This is the category of operating system functions that the user actually sees the most.

A more technical task is that of disk management. Under some operating systems your hard disk can be divided up, or partitioned into several virtual disks. The operating system treats each virtual disk as though it were a physically separate disk. Managing several physical and/or virtual disks can get pretty complex, especially if some of the disks are set up with different operating systems. (Some folks are never satisfied with just one of anything!)

Дата добавления: 2014-12-23