Considerations and Limitations

Before you install Veeam Software Appliance, review known issues and limitations described in release notes. Also, consider the following:

• Veeam Software Appliance must be installed on a dedicated empty machine that meets the system requirements. For more information, see System Requirements.
• Veeam Software Appliance cannot be installed on machines that have multipath storage devices.
• Enterprise Manager on Linux cannot be deployed from OVA files.
• Enterprise Manager on Linux is supported only with the Enterprise Plus edition license.
• You cannot install other backup infrastructure components on the machine where Enterprise Manager is installed. This includes the backup server, backup repository, proxy server and other components.
• Do not connect the same disk (for example, over iSCSI or NFS) to more than one Veeam Software Appliance or Veeam Infrastructure Appliance at the same time — otherwise, you risk data loss.
  
• Essentials license holders can only deploy Veeam Software Appliance on any hypervisor supported by Veeam and on Veeam Ready — Appliance certified hardware.

• Veeam Software Appliance installation and initial configuration support only the English US keyboard layout.
• When you install Veeam Software Appliance, the Rocky Linux operating system, Veeam Backup Enterprise Manager and other Veeam Software Appliance components are installed with predefined settings, including volume partitioning and user account creation. After installation is complete, you need to proceed with the initial configuration of Veeam Software Appliance, which includes setting up host users, and configuring server time and network settings.

• Veeam Software Appliance installation and initial configuration support only the English US keyboard layout.
• After you deploy a Veeam Software Appliance, adding new storage devices or resizing existing ones is not supported.

• You cannot install third-party software on a Veeam Software Appliance.

• You cannot use third-party software to back up or restore a Veeam Software Appliance.
• You cannot use Veeam Software Appliance or Veeam Agent for Linux to back up or restore a Veeam Software Appliance. To ensure continuous availability of the Veeam Software Appliance and minimize its downtime, use the High Availability Cluster feature.

• [VMware only] Veeam Software Appliance only supports the Network transport mode.
• [Microsoft Hyper-V only] Linux-based Veeam Software Appliance does not support the SCVMM High Availability feature.

• Veeam Software Appliance uses DISA and FIPS-compliant Linux policies. These policies cannot be changed.
• Veeam Software Appliance is compliant with most SCAP Security Guide DISA STIG for RHEL 9 requirements except for the following ones:

• V-258241 — RHEL 9 must implement a FIPS 140-3-compliant systemwide cryptographic policy.

• V-270180 — The RHEL 9 fapolicy module must be configured to employ a deny-all, permit-by-exception policy to allow the execution of authorized software programs.
• V-257937 — The RHEL 9 firewall must employ a deny-all, allow-by-exception policy for allowing connections to other systems.
• V-258122 — RHEL 9 must enable certificate based smart card authentication.

• If you use a Veeam Software Appliance and enable four-eyes authorization, you cannot disable or reduce the immutability period on the default Veeam Software Appliance repository without additional approval.