Amanda, or the Advanced Maryland Automatic Network Disk Archiver is an open source computer archiving tool that is able to back up data residing on multiple computers on a network. It uses a client–server model and includes: the backup server and client itself, a tape server, an index server
Amanda was initially developed at the University of Maryland and is released under a BSD-style license. Amanda is available both as a free community edition and fully supported enterprise edition. Amanda runs on almost any Unix or Linux-based systems. Amanda supports Windows systems using Samba or Cygwin. A native Win32 client (with support for open files) is also now available
BackupPC is a free backup software
1. Computer Viruses
Your primary concern with computer viruses is that some of them may corrupt the core files that run a particular application, which may affect how the application behaves (or if it opens at all) and may damage files you create using that application.
Sadly, today’s virus-ware now includes programs that attack other types of file formats besides those that actually execute your programs (*.exe and *.com files). For example, Word macro viruses are special viruses written to exploit the Visual Basic programming that can be added to Word and other applications to perform specific functions. Word macro viruses are abundant in corporate settings where users indiscriminately pass the infection back and forth between each other unchecked. Some of these viruses automatically send copies of themselves to contacts stored in an e-mail program’s address book, which is even worse than those bad fruitcakes that re-circulate at holiday time.
2. Improper Shutdown
The effects of such a improper shutdown can be devastating on some types of files that may be open on your desktop, including documents you’re working on at the time. These files may not be written properly to disk, may not reflect changes you made since the last time you saved the file, and could become corrupted. Always be sure you shut down your system properly whenever possible.
Even if you never shut down your system improperly, power outages can turn your PC off prematurely. If you have files open at the time of an outage, they might be corrupted when you reopen them after the system reboots.
3. Operating System Instability
An unstable operating system creates a ripe environment for file corruption because it can cause you to crash out of an application in which you’re working or it can freeze the system in mid-session, requiring you to reboot your PC without saving your open work. Avoid installing any new applications or upgrading existing applications until the operating system is stable.
1. A file that won’t open when you click it; the operation either puts you at an hourglass or does absolutely nothing.
2. You see the file you want to open in a folder list but when you try to open it, you’re told the system cannot find the file or it’s not a valid file.
3. A file opens with a wide range of error messages, not all of which indicate corruption.
4. A file opens to display what appears to be garbage characters as if you opened the file using the wrong program.
5. As the file is opening, a low memory warning appears, or you’re told you cannot open the file because you have too little available memory.
30 day evaluation of the Microsoft Diagnostics and Recovery Toolset. This product provides powerful, intuitive tools that help administrators recover PCs that have become unusable, and easily identify root causes of system issues.
This toolset is part of the Microsoft Desktop Optimization Pack.
Microsoft Diagnostics and Recovery Toolset System Requirements
Stellar Phoenix Windows Data Recovery helps to recover lost data from following cases: :
Recover deleted files after recycle bin has been emptied or
use of Shift+Delete key
Recover missing and lost logical drives (volumes)
Recover formatted hard drives (even after reinstalling operating system)
Recover re-partitioned hard drives (even after file system has been changed)
Recover lost files and folders
Provides Partition Recovery from FAT & NTFS Partition