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Recovery Manager for AD Forest Edition 10.0.1 - User Guide

Overview Backing up data
Permissions required for the Backup operation Managing Backup Agent Using a least-privileged user account to back up data Creating backups Retrying backup creation Enabling backup encryption Backing up AD LDS (ADAM) Backing up cross-domain group membership Backing up distributed file system (DFS) data Backup scheduling Setting performance options Setting advanced backup options Using Forest Recovery Agent Unpacking backups Using e-mail notification Viewing backup creation results Getting started
Permissions required to use Recovery Manager for Active Directory Recovery Manager Console Icons in the user interface Getting and using help Configuring Windows Firewall Using Computer Collections Managing Recovery Manager for Active Directory configuration Licensing
Restoring data
Getting started with Active Directory recovery Managing deleted or recycled objects Restoring backed up System State components Using granular online restore Restoring AD LDS (ADAM) Selectively restoring Active Directory object attributes Restoring objects in an application directory partition Restoring object quotas Restoring cross-domain group membership Performing a restore without having administrator privileges Reports about objects and operations Using complete offline restore Offline restore implications Restoring SYSVOL authoritatively Performing a granular restore of SYSVOL Recovering Group Policy Restoring data from third-party backups Using the Extract Wizard Restoring passwords and SID history
Fault tolerance Consolidating backup registration data Monitoring Recovery Manager for Active Directory Recovering an Active Directory forest
Permissions required to use Forest Recovery Console Forest Recovery Console Managing a recovery project Install Active Directory from Media recovery method Install Active Directory recovery method Managing Forest Recovery Agent Rebooting domain controllers manually Specifying fallback IP addresses to access a domain controller Resetting DSRM Administrator Password Purging Kerberos Tickets Managing the Global Catalog servers Managing FSMO roles Manage DNS Client Settings Configuring Windows Firewall Forest recovery overview Selectively recovering domains in a forest Recovering SYSVOL Deleting domains during recovery Resuming an interrupted forest recovery Recovering read-only domain controllers (RODCs) Checking forest health Collecting diagnostic data for technical support
Using Management Shell Creating virtual test environments Using Recovery Manager for Active Directory web interface Appendices
Frequently asked questions Best practices for creating backups for forest recovery Best practices for recovering a forest Descriptions of recovery or verification steps Backup Wizard Online Restore Wizard Online Restore Wizard for AD LDS (ADAM) Group Policy Restore Wizard Repair Wizard Extract Wizard Events generated by Recovery Manager for Active Directory

Why do I need to restore deleted users or groups, rather than re-create them?

Each user account or security group is uniquely identified with a SID (Security ID) and a GUID (Global Unique ID). If a user or group has been deleted, and is then re-created with the same name, the SID and GUID of the newly created user or group will differ from those of the deleted object. As a result, the new user or group loses all permissions, profile settings, and all other settings associated with the old SID and GUID.

When you restore a deleted user or group from a backup, the restored user or group will have the same SID and GUID as the deleted object, and will have all the settings associated with that SID and GUID.

How can I restore a user or group in Active Directory?

You can restore individual objects using the Online Restore feature of Recovery Manager for Active Directory. Alternatively, you can restore the entire Active Directory database, and then select individual objects for authoritative restore.

While Recovery Manager for Active Directory supports both methods, online restore is the recommended option as it is faster and simpler. The online restore method allows you to easily restore individual directory objects and object attributes without restarting domain controllers and putting Active Directory offline, thus achieving near-zero downtime.

How does online restore work?

The Recovery Manager for Active Directory online restore method facilitates the restoration of objects and objects attribute values, without putting Active Directory offline. The product can:

  • Recover deleted objects with all their attributes and links by using the functionality provided by Microsoft’s Active Directory Recycle Bin feature.
  • Convert the tombstones into regular objects before applying the attribute values held in the backup.

In the latter scenario, Active Directory retains the object’s tombstone for a specified configurable period of time (tombstone lifetime) in order to enable Active Directory replication to propagate the deletion. An object can only be undeleted if its tombstone exists. After applying the backed-up attribute values, the online restore process adjusts replication-related properties of the restored objects, so that Active Directory replication propagates the restored data to all domain controllers. Optionally, online restore can force replication of the restored data to decrease propagation delay.

When an object is undeleted, what is restored from the tombstone and what is restored from the backup?

When Microsoft’s Active Directory Recycle Bin feature is enabled in the Active Directory forest, Recovery Manager for Active Directory can use the functionality provided by Microsoft’s Active Directory Recycle Bin feature to undelete the object with all its attributes and links to the state the object was in immediately before deletion. No backups required in this recovery scenario.

In other recovery scenarios, when Microsoft’s Active Directory Recycle Bin feature is disabled or not supported, Recovery Manager for Active Directory first restores all the attributes preserved in the object’s tombstone. The remaining attributes are then restored from backup. If the backed-up value of an attribute differs from the value restored from the tombstone, then the backed-up value is restored. As a result, after the recovery operation completes, the restored object has the same attribute values, group memberships, and security descriptor as it had when the backup was created.

It is possible to determine which attributes are preserved in object tombstones by analyzing the AD schema. In such attributes, the third bit in the searchFlags property is set to 1. You can therefore enumerate these attributes using a filter that contains a matching rule such as the following:

searchFlags:1.2.840.113556.1.4.803:=8

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