How to Create a Consistent and Relevant Backup?

Disaster Recovery

Preparing for a Disaster Recovery

On Windows, while the system is up and running, many system files cannot be replaced because the system keeps them locked. For example, the user profiles that are currently being used cannot be restored. The login account has to be changed or the relevant service has to be stopped.

Data consistency of an application can be violated depending on what is active on the system when the backup runs, thereby causing re-start and execution issues after recovery.

Ideally, you would perform a backup with the relevant partition(s) set off-line, which is usually not possible.

Examine the activity on the system during the backup. Only operating system related processes and database services which are backed up online can remain active during the backup execution.

None of the low-level (UNIX) or background-level (Windows) application specific services should be running.

 

Updating the System Recovery Data (SRD)

What Is SRD?

System recovery data (SRD) is a Unicode text file that contains

 

information required for the configuration and restore of the Windows

 

target system. A SRD file is generated when CONFIGURATION backup is

 

performed on a Windows client and then stored in

 

<Data_Protector_home>\Config\dr\srd (Windows Cell Manager) or

 

in /etc/opt/omni/dr/srd/ (UNIX Cell Manager).

 

 

IMPORTANT

When IDB is not available, information about objects and media is stored

 

only in SRD file.

 

The SRD filename on the Cell Manager is identical to the hostname of

 

 

the computer where it was generated - for example

 

computer.company.com.

 

After the CONFIGURATION backup, the SRD contains only system

 

information required for installation of the DR OS. In order to perform a

 

disaster recovery, additional information about backup objects and

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HP B6960-90078 manual Updating the System Recovery Data SRD, How to Create a Consistent and Relevant Backup?, What Is SRD?