System State Data
It's call System State Data
Server backup software backups and protects all the important files stored on your Windows Server system such as mission critical business files, shared images, shared media files, documents and all system information.
Its very important to have a backup. The Windows Server Backup saves all your files, documents, pictures, info, videos and all the other stuff you have on your computer.
Automated System Recovery
.bkf files are backup files are are created by windows build-in backup utility NTbackup or Windows Backup and Restore (in XP). These utilities support image-based full system backups.
Automated System Recovery method
Importance of the system/feature in terms of availability, accuracy and backup.
A backup for Windows is always recommended because the operating system is vulnerable to viruses. Sometimes the only way to get rid of them is to start with a clean slate.
it's a part of system restore files
there are utilities which help us to take backup windows- ntbackup(you can take system state backup for AD) veritas tivoli etc
Windows 7 Professional and Ultimate editions have the backup feature, which, in addition to full-system Backup and Restore found in all editions, this feature provides backing up to a home or business network.
You can use a backup option, to restore from backup. Or to use one of restore points. Start->Accessories->System Tools->Backup. Or you can use the installation CD, then boot up in repair console.