![]() The length of forward incremental and forever forward incremental backup chains (chains that contain one full backup and a set of subsequent incremental backups) cannot be greater than 120 restore points.You cannot use Dell Data Domain backup repositories as sources or targets for file copy jobs.Dell Data Domain does not support the reverse incremental backup method.For more information on storage optimization, see Data Compression and Deduplication. Large data blocks produce a smaller metadata table that requires less memory and CPU resources to process. It is recommended that you use optimized job settings. When you create a backup job targeted at an Dell Data Domain backup repository, Veeam Backup & Replication will offer you to switch to optimized job settings and use the 4 MB size of data block for workload data processing (the Storage optimization setting).This results in that each 4 MB data block on the source becomes 5 MB block on the target. This is because Veeam Backup & Replication reads blocks of 4 MB, encrypts them, adds 16 KB metadata to each data block and then aligns data blocks. When you enable encryption, set data processing block size to 4 MB, and leave decompression on target and block alignment enabled (enabled by default), the size of the backup increases by 1 MB for each 4 MB data block. Įncryption can also affect the backup size: the size of a backup can be larger than the size of the original VM. For more information, see Data Encryption. Encryption has a negative effect on the deduplication ratio. Do not enable encryption for the jobs targeted at the deduplication storage appliance.Otherwise, Veeam Backup & Replication will not be able to access the storage system. NFS services must be enabled on Dell Data Domain.It reduces the load on the network and improves the network throughput. Use of Dell Data Domain with DD Boost does not guarantee improvement of job performance.For more information, see this Veeam KB article. You can disable the TLS connection with a registry value for the deduplicating storage appliances that do not support the TLS connection. Since Veeam Backup & Replication version 12, deduplicating storage appliances use the TLS connection. We strongly recommend that you follow recommendations from this list and also recommendations from this Veeam KB article.If you plan to use Dell Data Domain as a backup repository, consider the following limitations and recommendations: Limitations and Recommendations for Dell Data Domain Fibre Channel protocol: Veeam Backup & Replication communicates with the Dell Data Domain Fibre Channel server by sending SCSI commands over Fibre Channel.TCP/IP protocol: Veeam Backup & Replication communicates with the Dell Data Domain server by sending commands over the network.Veeam Backup & Replication supports Dell Data Domain storage systems working over the following protocols: As a gateway server, you must use a Microsoft Windows server that is added to the backup infrastructure and has access to Dell Data Domain over Fibre Channel. You can define the gateway server explicitly or instruct Veeam Backup & Replication to select it automatically.įor Dell Data Domain storage systems working over Fibre Channel, you must explicitly define the gateway server that will communicate with Dell Data Domain. You define what gateway server to use when you assign a backup repository role to Dell Data Domain. When any job addresses the backup repository, Veeam Data Mover on the gateway server establishes a connection with Veeam Data Mover on the backup proxy, enabling efficient data transfer over LAN or WAN. For more information, see Gateway Server. Veeam Backup & Replication will automatically deploy Veeam Data Mover on this gateway server. ![]() For this reason, to communicate with the Dell Data Domain storage, you need to deploy a gateway server. The Dell Data Domain storage cannot host Veeam Data Mover. To communicate with Dell Data Domain, Veeam Backup & Replication uses two Veeam Data Movers that are responsible for data processing and transfer: The DD Boost server runs on the OS of the Dell Data Domain storage system. The DD Boost server is a target-side component. When you add a Microsoft Windows server to the backup infrastructure, the DD Boost Library is automatically installed on the added server together with Veeam Data Mover. The DD Boost library is embedded into the Veeam Data Mover setup. ![]() The DD Boost library is a component of the Dell Data Domain system. To support the DD Boost technology, Veeam Backup & Replication leverages the following Dell Data Domain components: You can use Dell Data Domain storage systems with Data Domain Boost (DD Boost) as backup repositories.
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