5 1 0:SEP sesam Bare Metal Recovery Linux – Recovery

From SEPsesam

Welcome to the latest SEP sesam documentation version 5.1.0 Apollon. For previous documentation version(s), check documentation archive.


The SEP Bare Metal Recovery module for Linux is fully integrated into the SEP sesam Client installation to ensure a fast and complete system recovery. The Relax-and-Recover (ReaR) is a Linux BSR recovery solution (based on GPL license) that is easy to set up and requires no maintenance. In the event of a disaster, the system can be re-created either on the same hardware or on compatible replacement hardware. For more details, see Relax-and-Recover documentation.

Before staring a recovery, make sure that all requirements are met and your backups have been configured properly. For details, see SEP sesam Bare Metal Recovery Linux – Backup Configuration.

Recovery procedure

During a Linux BSR recovery the following steps are performed:

  1. Restore the ISO image to a different Linux machine and mounted to the recovery host. Optionally, you can create a CD-ROM that will be used as a boot medium.
  2. Boot the recovery console (as admin) either via the created CD-ROM image or, if possible, via the systems bootloader.
  3. Recover the systems partitions and file system configuration via the recovery console.
  4. Perform a restore of the Linux client full file system backup to the newly created partition. Once done, reboot the system.

Step 1: Restoring the CD-ROM image to a file system

If the system is not bootable via the recovery console due to a complete file system crash, use the recovery console CD-ROM to boot the system. Restore the created ISO image to a random system and burn it to a media of your choice.

Step 2: Booting a system from the external media

Boot your system from the connected external media, such as USB/CD-ROM, or disk recovery console.

Once the media is inserted, the following boot menu appears:

Boot the system as follows:

  1. During bootup the system provides a selection of network interfaces. Select the network interface which is needed to ensure connectivity with your backup server. The IP configuration of the original system will be used:

  2. After the system is booted, log in to the disaster recovery console with the user name root and no password. If you have to log in remotely, the disaster recovery console is also reachable via SSH.
  3. Note
    A password is required for the remote login via SSH. This is the password you have created when configuring a backup task for the Linux BSR console. If you haven't created a password before, you cannot use the remote login.

    Start the recovery process by using the command rear recover as shown in the screenshot:

Step 3: Recovering the systems partitions and filesystem configuration

Restore the disk information as follows:

  1. The disk restore wizard prompts for a local disk to be partitioned. Select the appropriate disk to be used:

  2. Confirm the disk layout configuration.

  3. Start the recovery and let the recovery console create the file systems and partitions:

  4. After the recovery, check weather all the file systems have been created. In the screenshot, there is a newly created mountpoint /mnt/local that will be used as a new restore target in the next step: restoring the file system data.

Step 4: Restoring the file system backup

After the partitions and file systems are created, restore the file system backup using SEP sesam GUI.

  1. From the SEP sesam GUI menu bar, select Activities -> Restore. The New Restore Task window appears.
  2. From the drop-down list, select the target file system backup task, in our example, dfix3_all and click Next.
  3. The search results are displayed. From the list of savesets matching your query, select the desired version by clicking on it, then select the option Complete restore of selected task, and click Next.

  4. In the Target Settings window, click New restore target, and specify the new restore target, in our example, /mnt/local.

  5. Start your restore task.
  6. Once the file system is restored, exit the disaster recovery console with the command exit and reboot the system.

Known issues

If you have problems, check the Troubleshooting disaster recovery on Linux.

See also

SEP sesam Bare Metal Recovery Linux – Backup ConfigurationStandard Restore Procedure

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