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Requirements and Limitations for EMC VNX/VNXe

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If you plan to perform backup and restore from EMC VNX/VNXe storage snapshots, consider the following limitations:

EMC VNX Block

Veeam Backup & Replication supports LUNs that reside on Storage Pools.
To take LUN snapshots, Veeam Backup & Replication uses the VNX snapshot technology. Make sure that you have a license that covers the VNX snapshot technology. The SnapView snapshot technology is not supported.

EMC VNX File

A read-only checkpoint can have only 1 writable snapshot. If a read-ony checkpoint already has a writable snapshot, Veeam Backup & Replication uses this writable snapshot for restore.
Writable snapshots are not detected by the storage rescan process and are not displayed in the storage system hierarchy.

EMC VNXe

Veeam Backup & Replication does not support EMC VNXe Gen 1 OS (2.x.x). EMC VNXe Gen 2 OS (3.x.x) is supported.
In EMC VNXe, you cannot export more than one storage snapshot for a LUN or LUN group at a time. If you start several tasks simultaneously, a task with a higher priority will terminate a task with a lower priority. In Veeam Backup & Replication, tasks have the following priority levels (starting with the top priority): restore task > backup job > rescan task.

For example:

If a storage snapshot is used by a restore task and you start a backup job, the backup job will fail or fail over to a regular processing mode (in case failover is enabled in the job settings).
If a storage snapshot is used by a backup job and storage rescan starts at the same time, the rescan process will fail.
If a storage snapshot is used by a backup job and you start another backup job, the second backup job will wait for the first backup job to complete.

EMC VNX(e) Working over NFS

VMs that you plan to back up or replicate must not have VMware snapshots. VMs with VMware snapshots will be skipped from Backup from Storage Snapshots.
If you enable the Enable VMware tools quiescence option in the job settings, Veeam Backup & Replication will not use Backup from Storage Snapshots to process running Microsoft Windows VMs that have VMware Tools installed.