Disaster Recovery , Backup and Restore , SSD (System State Data) and step

Disaster Recovery

Backup and Restore

Backup means to copy data for future purpose. It use for fault tolerance of data. Data will never compress during the backup process. Backup is faster than copy-paste and format will change (  *.bkf  or   *.vhd  )

We can take backup through network but local backup is recommended.

We can take backup of particular file, folder and partition.

 We can also take backup of SSD (System State Data).

Types of backup

1. Normal or Full backup

2. Incremental backup

NOTE: Archive attribute is use by OS and it is for backup purpose only.

 

1.         Full backup means backup of all the selected files either backedup or not and it will be markup after the      backup is done.

2.         Incremental  backup means backup of only the latest data which is ready for backup. After backup it        will be markup.

NOTE:

In windows 2003 and older versions , there are 5 types of backup :-

1. Normal or Full

2. Copy

3. Daily

4. Incremental

5. Differential

NOTE:

In Windows 2008  and higher versions :-

1. We have to install Windows Server Backup Feature

2. Backup cannot be done within same partition.

3. Tape drives are not supported by default.

SSD (System State Data)

SSD is collection of the following items :-

1. Registry or OS configuration

2. Boot Files like ntldr, bootmgr etc.

3. Class Registration Database like  COM, DCOM etc.

4. Certificate Service, if installed

5. Active directory database  or ntds.dit (if it is DC)

6. Sysvol folder or security templates  (if it is DC)

NOTE:  SSD is important because it is use to take backup of AD

If we want to take backup of particular object like an OU, then we have to take backup of SSD.

To take backup of SSD :-

Open backup wizard  -> Select SSD   -> Give destination to store backup file

We can take incremental backup afterwards.

If particular object like user, OU etc, is deleted or if entire AD is corrupt, then we have to restore SSD.

To restore SSD on DC   :

Restart DC   -> Press F8   -> Directory Service Restore Mode (only for DC)   ->   -> Logon as Administrator with   DSRM mode password        -> Open Backup wizard and restore SSD  ( Authoritative or Non-

Authoritative Restore  )  -> Restart

NOTE:

Non-Authoritative restore means other DC will overwrite database of this DC after restore.

Authoritative restore means this DC will have more priority and it will overwrite database of other DCs, actually its PVN will increase to 100,000

NOTE:

We can use AD Recycle Bin and LDP.exe in Windows 2008 and Windows 2012 to restore single object like single OU or single User.