Data in windows 2000 is divided into two primary types 1) User Data and 2) System State data.
User data includes application files and folders, operating system files and folders, and user-created files and folders.
For all Windows 2000 computers, System State Data includes operating system boot files, the registry and the COM+ class registration database. On DC, System state data includes the AD data store and the contents of the SYSVOL folder. When Certificate services is installed in Windows 2000 server, System State Data includes Certificate Services database.
Backup Types
· Normal : Backs up all selected files and folders. It removes the archive attribute from the backed up files and folders. It is a full, complete backup.
· Copy : Backs up all selected files and folders. It does not remove or otherwise affect the archive attribute. Mainly to create extra backup to store on Off-site
· Incremental : Backs up all selected files and folders that have changed since the last normal or incremental backup. It removes the archive attribute from the backed up files and folders.
· Differential : Backs up all selected files and folders that changed since the last normal backup. It does not remove the archive attribute from any files and folders.
· Daily : Backs up all selected files and folders that changed during the day the backup is made. It does not remove or otherwise affect the archive attribute.
Backup Strategies
· Perform a normal backup everyday
· Perform a weekly normal backup and daily differential backups.
· Perform a weekly normal backup and daily incremental backups.
Emergency repair disk is primarily used to repair and restart a windows 2000 computer that won’t boot. It used to repair Windows 2000 system files that become accidentally corrupted or erased due to viruses or other causes. Windows NT copies the registry in the Emergency repair disk.
Restoring System State Data on Domain Controllers is two types
Nonauthoritative restore of Active Directory : This is a full restore of System State data, including Active Directory, on a Windows 2000 DC. When this type of restore is performed, AD entries on other DCs will replace the restored entries when replication of AD occurs.We should use this type of restore when you only have one DC in the network, or when you are primarily concerned with restoring the other components of System State data, such as the registry and system boot files, and we do no want to overwrite the more recent copy of AD located on other DCs on the network
Authoritative restore of Active Directory : Like a Non-authoritative restore, this is also a full restore of System State data, including AD, on a Windows 2000 Domain Controller. After the restore is complete, however, an additional step is requires. Some or all of the restored AD objects are marked as being authoritative. When this type of restore is performed the restored AD entries that are marked as authoritative will replace the corresponding AD entries on other DCs on the network when replication of AD occurs. We should use this type of restore , when the AD data store on the network’s domain controllers is damaged, or when a portion of AD has been accidentally deleted.
When we perform an authoritative restore of AD, we need follow the one more step..
· In the command prompt , type ntdsutil and press enter.
· At the ntdsutil : prompt type authoritative restore and press Enter.
· To restore the entire AD data store, at the authoritative restore : prompt
Type restore database and press Enter. Or to restore a portion of AD data store at the authoritative restore : prompt type
Restore subtree OU=OU_name,DC=domain_name,DC=root_domain and press Enter.
For Eg, to restore only a OU named Marketing in domain named Domain2.com , we should type
Restore subtree OU=Marketing,DC=domain2,DC=com
· In the authoritative Restore Confirmation dialog box, click Yes.
· At the authoritative restore : prompt, type quit and press Enter.
· At the ntdsutil : prompt, type quit and press Enter.
· At the command prompt, type exit and press Enter.
Recovery Console is limited version of the Windows 2000 operating system that only has command-line interface. Use recovery console when we aren’t able to resolve a computer’s problem by using Safe Mode or the Emergency Repair Disk. Recovery Console is used to manually start or stop a service, repair the master boot record, or manually copy files from floppy disk or compact disk to the computer’s hard disk to restore a system.
