Backups in WebSphere

How we take backups in WebSphere?
To know this one should understand what is backup?, how it can be done?, what to backup?, when to backup?.
What is backup? A Backup is a routine runs everyday/week/month per your schedule, takes a copy of the file system or Snapshot of entire OS and so on.
How it can be done?
This is done a special group called System Administrators. They may use a specific software and schedule backup task, like Veritas NetBackup. When will the scheduler runs? Depends on the enterprise backup policy. It can a nightly backups, or over the weekend and so on.
Backup in view of WebSphere - One can backup WebSphere Configuration time to time or as and when required.
How to take Backup in WebSphere?
WebSphere supplies a command called backupConfig
backupConfig.sh backup_file [options]where backup_file specifies the file to which the backup is written. If you do not specify one, a unique name is generated.
Options
-nostop -quiet -logfile logfile_name -profileName profile_name -replacelog -trace -username user_name -password password -help -?

nostop
Tells the backupConfig command not to stop the servers before backing up the configuration
-quiet
Suppresses the progress information that the backupConfig command prints in normal mode
-logfile file_name
Specifies the location of the log file to which trace information is written
By default, the log file is named backupConfig.log and is created in the logs directory.

-profileName profile_name
Defines the profile of the application server process in a multi-profile installation
The -profileName option is not required for running in a single-profile environment. The default for this option is the default profile.

-replacelog
Replaces the log file instead of appending to the current log
-trace
Generates trace information into the log file for debugging purposes
-username user_name
Specifies the user name for authentication if security is enabled in the server; acts the same as the -user option
-user user_name
Specifies the user name for authentication if security is enabled in the server; acts the same as the -username option
-password password
Specifies the password for authentication if security is enabled in the server
-help
Prints a usage statement
-?
Prints a usage statement