5 1 0:Restoring System State

From SEPsesam

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


SEP sesam supports the system state data restore and uses the Microsoft Volume Shadow Copy Service (VSS) to restore system state components. These components include core files and registry settings and are related to various aspects of Windows operating system. By default, all system state components are restored as a group. You can also restore individual system service components, while other system state components can only be restored as a group.

You can perform a system state restore to recover a fully functional system without having to reinstall the Windows operating system. For example, if your system data gets corrupted, you can roll back to the last healthy system state data. You can also use a system state restore as part of the disaster recovery procedure. However, to prepare your system for disaster recovery, it is strongly recommended to use SEP sesam BSR Pro instead (used locally on the client to create a boot image that is used to recover the client system).

System state restore and Bare System Recovery (BSR) serve different purposes:
  • System state recovers OS core files and registry settings to a previous known state. Therefore, you should only use it to perform a rollback on the same system. If you intend to restore to another system, the alternative system must have the same make, model, and configuration (identical hardware). In such cases, it is recommended to use SEP sesam BSR Pro.
  • SEP sesam BSR Pro is a disaster recovery solution and is used to perform a full system recovery to the same or alternate system using the same or dissimilar hardware.

Note that SEP sesam provides the web Restore Assistant interface which is more intuitive and offers additional advanced options compared to the GUI restore wizard. On the other hand, it does not support the restore of special task types, such as PostgreSQL, NDMP, System Recovery, etc. For these task types you can only use the GUI restore wizard to restore your data.

System state components

System state elements are machine-specific and depend on the respective operating system installation installation version and configuration. SEP sesam allows for dynamic discovery of existing system state elements, their backup and restore.

At a minimum, the following components are included:

System state data
Registry, COM+ class registration database, boot and system files, DFS namespaces/replications
A domain controller system state
Active Directory Domain Services, Windows Registry, COM+ database, SYSVOL directory
System services components
Background Intelligent Transfer Service (BITS), Cluster Service information (cluster node only), Dynamic Host Configuration Protocol (DHCP), Microsoft Internet Information Services (IIS) meta-directory, Removable Storage Management Database (RSM), Remote Storage Service, Terminal Server Licensing, Windows Internet Name Service (WINS), Windows Management Instrumentation (WMI).


Make sure that the following conditions are met when restoring system state data:

  • The original system, from which the system state was backed up, must be available in its original hardware configuration with a bootable original OS. If the original system is unavailable, it must be fully restored first, either on a physical system using SEP sesam BSR Pro or from a VM backup.
  • You must have restore permissions to restore system state information. For details, see User Roles and Permissions.
  • Your Windows client must be available with SEP sesam Client (BSR SW – customized Windows PE, or BSR Windows Boot Image – generated via BSR Windows).
  • If Active Directory is installed, you must be in AD restore mode.
CAUTION: Take the following into account before starting system state restore:
  • Incorrectly restoring Windows system state can make your computer inoperative! Use caution and plan in advance before recovering system state data.
  • When restoring the Active Directory Service, make sure that your system state backup is no older than the Active Directory backup lifetime (the supported backup lifetime for domain controllers is equal to the maximum tombstone age (60 days by default)). Restoring an old version can lead to a number of problems, such as mismatched accounts within AD.
  • Restoring the system state also restores ASR files when running in WinPE (Windows Preinstallation Environment).


  1. From the SEP sesam GUI menu bar, select Activities -> Restore. The New Restore Task window opens.
  2. Select the backup task with the required system state data for the client you want to restore. You can search savesets by task name or by filename or path.
  3. Under the Saved in period drop-down lists, specify the time frame for which you want to conduct the search. Click Next.
  4. The search results are displayed. From the list of savesets matching your query, select the desired version by clicking on it, then select other relevant restore options (complete/as path restore). Click Next to display the Select Files dialog.
  5. Select the data you want to restore: If you select the root node, all components are selected. You can also restore individual system services components, while the startable system state nodes can only be restored as a unit due to their dependencies. Click Next.
  6. Select your restore target: Under the Target path settings, choose between the Restore to original target path or New restore target options. Typically, a system state restore is used to restore all components to their original location. You can also restore the system state data to another directory. This way, your active system directory is not replaced. However, you are advised against using a system state restore for any purpose other than system recovery.
  7. Under the Execution options drop-down list, select one of the following options:
    • Do not overwrite existing items (set by default): Use this option if you want to recreate some missing or deleted files, but do not want to overwrite files that already exist at the target location.
    • Overwrite existing items: Use this option if you want to restore the computer to a previous working state; the existing system state at the target location will be replaced by the restored version.
    • Create new version: If system state files already exist at the target location, the restored files will be recreated under a new name; use this option sparingly as it may result in thousands of renamed files. If you have deleted certain files, you may consider restoring to another location instead. This way, the data will be restored to another target but will retain the original directory structure, enabling you to easily find the required files.
    You can skip the next option (Auto recover after restore) as it does not apply to system state restore. Click Next.

  8. To start your restore immediately, click Start. To save the restore task, click Save.
  9. After restoring the system state, you have to restart your computer.

Monitoring restore

You can view the status of your restore jobs via SEP sesam Web UI (Monitoring -> Restores) or view the status in the GUI (Main Selection -> Job State -> Restores). The restore overview provides detailed information on the last run of restore jobs, including task name, status (successful, error, in queue ...), start and stop time of the last backup, data size, throughput, etc. For details, see Monitoring in the Web UI or Restores by State in the GUI.

See also

Backing up System StateSEP sesam BSR ProRestoreStandard Restore Procedure

Copyright © SEP AG 1999-2024. All rights reserved.
Any form of reproduction of the contents or parts of this manual is allowed only with the express written permission from SEP AG. When compiling and designing user documentation SEP AG uses great diligence and attempts to deliver accurate and correct information. However, SEP AG cannot issue a guarantee for the contents of this manual.