Veeam Backup & Replication 10
User Guide for VMware vSphere
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NAS Backup Support

Veeam Backup & Replication allows you to back up and restore content of NAS file shares.

To enable and configure the NAS backup feature in Veeam Backup & Replication, add the following components to the backup infrastructure:

NAS Backup Support 

For system requirements for NAS backup components, see System Requirements.

To learn how these components interact during file share backup, see How File Share Backup Works.

File Share

A file share is a storage device or data source available to multiple hosts through a computer network.

File share backup jobs in Veeam Backup & Replication can read data from the following sources:

NAS Backup Support Note:

Reading from VSS snapshots is available only if the following conditions are met:

  • The source file share is running on the machine with SMB v3 feature enabled.
  • The file proxy role is assigned to the machine running Microsoft Windows Server 2012 R2 or later with SMB v3 feature enabled.

To learn how to add NAS file shares to the backup infrastructure, see Adding File Share.

File Proxy

A file proxy is an architecture component that sits between the file share and other components of the backup infrastructure. The file proxy operates as a data mover that transfers data from the source file share to the backup repository. The file proxy processes jobs and delivers backup and restore traffic.

To deploy a file proxy, you must add a Windows-managed server to the Veeam Backup & Replication backup infrastructure and assign the role of the file proxy to the added server, as described in Adding File Proxy. After that, choose this file proxy to process the backup traffic from file shares, as described in Adding NFS File Share and Adding SMB File Share.

To optimize performance of several concurrent tasks, you can use several file proxies. In this case, Veeam Backup & Replication will distribute the backup workload between available file proxies on per-task basis, taking into account proxy connectivity and their current load. You can deploy file proxies both in the primary site and in remote sites.

Cache Repository

A cache repository is a storage location where Veeam Backup & Replication keeps temporary metadata. Veeam Backup & Replication uses the cached metadata to reduce the load on the file share during the backup procedure. This allows performing incremental backups from the file share very quickly and very efficiently.

You can assign the role of a cache repository to a simple backup repository added to the Veeam Backup & Replication infrastructure. To assign this role, select the backup repository as a cache repository as described in Specify File Share Processing Settings.

To minimize the network load during backup, locate the cache repository closer to the file share in the computer network: at the best they should be one hop away from each other.

Backup, Archive, Secondary Repositories

A backup repository is a main storage location where Veeam Backup & Replication keeps backup files and metadata files. Backups stored in the backup repository can be used to restore the entire file share to the state as of a specific restore point.

If you want to retain specific files for longer periods of time, you can use cheaper devices for archive purposes. To enable file archiving, configure Veeam Backup & Replication to move backup files and metadata files from the backup repository to an archive repository.

If you want to store a copy of the file share backup in a different repository, you can configure a secondary repository where Veeam Backup & Replication will copy all backups created in the backup repository. The secondary repository can have its own retention policy and encryption settings.

The table below describes which roles can be assigned to the different storage types.

1 If you use a Dell EMC Isilon storage system in the CIFS Share Access mode, make sure that you have assigned your service account to the built-in BackupAdmin role within Isilon. Otherwise, the access to the share will be denied.

2 If you plan to use HPE StoreOnce storage appliances, mind that due to performance considerations the vendor recommends to use the repository of this type to store up to 1,000,000 backup files per storage system including different versions of files and not more than 10 TB of backup data.

3 The object storage repository added as a Capacity Tier in SOBR is not used for storing NAS backups. To archive NAS backup files to an object storage repository, assign it as an archive repository when creating a file share backup job.

4 You can create two object storage repositories pointing to the same folder/bucket and use these repositories for storing both NAS backups and Capacity Tier backups at the same time. However, these object storage repositories (mapped to the same cloud folder) must not be used across multiple Veeam Backup & Replication servers for the same purposes as it leads to unpredictable system behavior and inevitable data loss.

Deployment of Backup, Archive and Secondary Repositories

To assign the role of a backup, archive or secondary repository to a storage, do the following:

  1. Add the storage that you want to use as a backup, archive or secondary repository to the Veeam Backup & Replication Backup Infrastructure. For more information, see Adding Backup Repositories.
  2. Configure the backup repository and the archive repository as described in Define Target Backup Storage Settings.
  3. Configure the secondary repository as described in Specify Secondary Repository.

Data Structure in Backup, Archive and Secondary Repositories

Backup, archive and secondary repositories store file share backups as objects in VBLOB files (up to 64 MB each) of unstructured data. They also store metadata about the original files and folders on the file share and their structure.

When you run the file share backup job for the first time, Veeam Backup & Replication creates a full backup for all files and folders of the file share. During subsequent backup job sessions, Veeam Backup & Replication copies only files and folders that have changed since the last backup job session.

Although the file share backup job first creates a full backup and afterwards incremental backups, Veeam Backup & Replication does not create a separate file for each backup job run as it does during VM backup. Instead of this, it consistently creates multiple VBLOB files accompanied by metadata files that track all the changes on the file share.

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