This is an archive version of the document. To get the most up-to-date information, see the current version.

General Limitations

In this article

The following limitations apply to all storage systems supported by Veeam Backup & Replication:

Backup Infrastructure

[For iSCSI connectivity] CHAP authentication is not supported.

Backup from Storage Snapshots

Backup from Storage Snapshots has the following limitations:

Backup from Storage Snapshots does not support vRDM disks. vRDM disks are skipped from processing.
Backup from Storage Snapshots cannot be used for VMs whose disks are located on VVol datastores.
Backup from Storage Snapshots cannot be used to back up VM templates.

[For storage systems working over NFS] VMs that you plan to back up or replicate must not have VMware vSphere snapshots. VMs with snapshots are skipped from processing.

[For storage systems working over NFS] 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.

Veeam Explorer for Storage Snapshots

Veeam Explorer for Storage Snapshots has the following limitations:

You cannot perform any kind of restore operation (Instant VM Recovery, VM guest OS files restore and application items restore) if a VMware datastore comprises several LUNs.
Veeam Explorer for Storage Snapshots does not support VMs whose disks are located on VVol datastores.
If a VM has several disks that are located on different VMware vSphere datastores, Veeam Backup & Replication will restore the following data:

[Instant VM Recovery] The restored VM will have only those VM disks that are hosted on the same datastore as the VMX file.
[VM guest OS files restore] You will be able to restore VM guest OS files only from those VM disks that are hosted on the same datastore as the VMX file.
[Application items restore] You will be able to restore application items only from those VM disks that are hosted on the same datastore as the VMX file.

[Multi-OS file-level restore] You cannot restore files directly to the original location from backups of BSD, Mac and Solaris VMs. You cannot restore files directly to the original location from NSS filesystems. Use the Copy to option instead.

[For secondary storage arrays] You cannot perform Instant VM Recovery and restore VM guest OS files to the original location from snapshots on secondary storage arrays — NetApp SnapMirror, SnapVault and Nimble Snapshot Replicated Copy. Secondary storage arrays are not mapped to original VMs and datastores.

The file-level restore limitation applies both to Microsoft Windows and other file systems. Use the Copy to option instead.