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Veeam Backup Server

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The Veeam backup server is a Windows-based physical or virtual machine on which Veeam Backup & Replication is installed. It is the core component in the backup infrastructure that fills the role of the “configuration and control center”. The Veeam backup server performs all types of administrative activities:

Coordinates backup, replication, recovery verification and restore tasks
Controls job scheduling and resource allocation
Is used to set up and manage backup infrastructure components as well as specify global settings for the backup infrastructure

In addition to its primary functions, a newly deployed Veeam backup server also performs the roles of the default backup proxy and the backup repository (it manages data handling and data storing tasks).

The Veeam backup server uses the following services and components:

Veeam Backup Service is a Windows service that coordinates all operations performed by Veeam Backup & Replication such as backup, replication, recovery verification and restore tasks. The Veeam Backup Service runs under the Local System account or account that has the Local Administrator permissions on the Veeam backup server.
Veeam Backup Shell provides the application user interface and allows user access to the application's functionality.
Veeam Backup Catalog Service is a Windows service that manages guest OS file system indexing for VMs and replicates system index data files to enable search through guest OS files. Index data is stored in the Veeam Backup Catalog — a folder on the Veeam backup server. The Veeam Backup Catalog Service running on the Veeam backup server works in conjunction with search components installed on Veeam Backup Enterprise Manager and (optionally) a dedicated Microsoft Search Server.
Veeam Backup SQL Database is used by Veeam Backup Service, Veeam Backup Shell and Veeam Backup Catalog Service to store data about the backup infrastructure, jobs, sessions and so on. The database instance can be located on a SQL Server installed either locally (on the same machine where the Veeam backup server is running) or remotely.
Veeam Backup PowerShell Snap-In is an extension for Microsoft Windows PowerShell 2.0. Veeam Backup PowerShell adds a set of cmdlets to allow users to perform backup, replication and recovery tasks through the command-line interface of PowerShell or run custom scripts to fully automate operation of Veeam Backup & Replication.
Backup Proxy Services. In addition to dedicated services, the Veeam backup server runs a set of data mover services (for details, see Backup Proxy).

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