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Requirements and Limitations for EMC VNX/VNXe

In this article

    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.