Quantum DXi

You can use Quantum DXi appliances as backup repositories.

Quantum DXi Deduplication

Quantum DXi appliances use Quantum’s patented data deduplication technology. During backup data transfer, Quantum analyses blocks in a data stream. Instead of copying redundant data blocks Quantum uses reference pointers to existing blocks on the storage device.

Backup Infrastructure

To communicate with Quantum DXi, Veeam Backup & Replication uses two Veeam Data Movers that are responsible for data processing and transfer:

  • Veeam Data Mover on the VMware backup proxy
  • Veeam Data Mover on the Quantum DXi appliance

Quantum DXi does not host the Veeam Data Mover permanently. When any task addresses a Quantum DXi storage, Veeam Backup & Replication deploys and starts Veeam Data Mover on the Quantum DXi system.

Veeam Data Mover establishes a connection with Veeam Data Mover on the VMware backup proxy, enabling efficient data transfer over LAN or WAN.

Quantum DXi 


Since Veeam Backup & Replication version 12, deduplicating storage appliances use the TLS connection. You can disable the TLS connection with a registry value for the deduplicating storage appliances that do not support the TLS connection. For more information, see this Veeam KB article.

For more information and recommendations on working with Quantum DXi, see this Veeam KB article.

Backup Repository Configuration

Configure Quantum DXi backup repositories in the following way:

  1. Create at least one share on each Quantum DXi appliance. Enable VDMS (Veeam Data Mover Service) for the created share. Leave default compression and deduplication settings for the share. For more information, see Quantum DXi documentation.


When adding credentials for Quantum DXi, use only lower case symbols for the user name.

  1. Configure Quantum DXi backup repositories and point them at the created shares on each Quantum DXi appliance. Set the Limit maximum concurrent tasks to N option to 10 tasks. This limit can be tuned up or down with assistance from Quantum DXi Customer Support.

When you add Quantum DXi servers to the Veeam backup infrastructure, make sure that you use the UPN format for an Active Directory account user name (for example, john.doe@domain.local), and enter the user name in lowercase letters only.

Backup Job Configuration

For the backup jobs, use the forward incremental backup method. We recommend that you enable synthetic full and schedule them to run on a weekly basis. Also, enable active full backups and schedule them to run on a monthly basis. For more information, see Backup Settings. We recommend that you do not enable encryption for the jobs targeted at the deduplication storage appliance. Encryption has a negative effect on the deduplication ratio. For more information, see Data Encryption.

Related Topics

Adding Deduplicating Storage Appliances

Page updated 3/14/2024

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