.. _backup-restore-modular-arch:

Backup and Restore in a Modular Architecture
---------------------------------------------

.. _21.1|VOSS-837|EKB-8463:
   
Backups that were made *before* topology migration to a modular
architecture can not be restored to the topology *after* migration.
Manual intervention is required to restore.

A new modular architecture backup must be created immediately
after topology migration. This backup will be on the highest priority
secondary db node.

.. important::

   * Backups for an Application and Web Proxy type node are not required.
     A backup created on the secondary database node will include all the relevant data,
     excluding the web certificates.
   
     After a restore is performed by following the documented process: :ref:`restore-a-backup`,
     the web certificates need to be reinstalled on each of the Application and Web Proxy nodes.
     For commands, see: :ref:`web-certificate-commands`. These certificates should already
     be stored in a safe location after initially installed,
     therefore do not require inclusion in the backups. 
   * When restoring a backup on a cluster, the latest backup from the highest weighted secondary
     database server must be used to ensure the entire cluster (excluding the web certificates)
     including the database is restored and the cluster is automatically provisioned as part of
     the restore.