System Requirements for Virtual Server Agent with OpenStack

Commvault provides support for the following OpenStack distributions:

  • Red Hat Enterprise Linux OpenStack Platform (RHEL-OP) with the following versions: Kilo, Liberty, Mitaka, Newton, Ocata, Pike, Queens, Rocky

  • Mirantis with the following versions: Kilo, Liberty, Mitaka, Newton, Ocata

  • HPE Helion OpenStack 4.0.1 with the following version: Mitaka

  • Huawei OpenStack Platform with the following versions: FusionCloud V100R002C00SPC600 (FusionCloud 2.06), FusionCloud 6.3.1, FusionCloud 6.5.0 (Huawei Cloud Stack 6.5.0), FusionCloud 6.5.1 (Huawei Cloud Stack 6.5.1)

  • H3C OpenStack Platform with the following version: Mitaka, Pike

  • EasyStack Cloud Service (ECS) OpenStack Platform with the following version: Newton

When creating a virtualization client, if there are multiple endpoints for the keystone URL, use the keystone URL for the public endpoint.

If cinder volumes are created on a storage array, you must obtain the corresponding licenses (for example, Storage Snapshot and LUN copy).


For Huawei OpenStack Platforms with any version of FusionCloud, you must configure the bEnableFusionCloud additional setting to execute restores. For more information, see Restores for OpenStack.

Virtual Server Agent (Proxy) Requirements

The Virtual Server Agent can be deployed on a Windows or Linux instance in the OpenStack environment.

Only instances that have the VSA installed can act as VSA proxies to perform backups and restores.

At least one proxy is needed for each region. You can deploy additional VSA proxies as needed for load balancing.

The following operating systems are supported for VSA proxies:

  • Microsoft Windows Server 2016

  • Microsoft Windows Server 2012 R2

  • CentOS 7

  • RHEL 7.2, 7.3, 7.4, 7.5

For Linux proxies, disable lvmetad to avoid issues with HotAdd operations during backup and recovery.


Linux proxies must have the psmisc and lvm2 packages installed.

The Virtual Server Agent should be installed on instances that meet the following requirements:

  • Minimum of 100 GB disk space recommended

  • Minimum of 4 GB RAM required beyond the requirements of the operating system and running applications

For Windows proxies, VirtIO version is supported as a driver for OpenStack backup and restore operations.

MediaAgent Requirements

The following packages must be installed on MediaAgents that are used for guest file browse and restore operations on Glance images:

  • QEMU disk image utility (qemu-img)

  • libguestfs

  • libguestfs-tools

  • Logical Volume Management (lvm)

Port Requirements

  • The security group associated with the proxy instance should permit all incoming and outgoing TCP traffic.

  • If unrestricted access cannot be set up, configure a one-way Commvault firewall between the CommServe host or MediaAgent and the VSA proxy instance. With this firewall configuration, you can restrict communication to a single TCP port (typically port 8400).

  • When using the RHEL-OP distribution or in any OpenStack environment that includes a firewall, ensure that CVD port 8400 is configured to accept incoming traffic from Commvault.

Hardware Specifications

For information about hardware requirements for the Virtual Server Agent, see Hardware Specifications for Virtual Server Agent.


Third-party maintenance (minor) releases or service packs that are supported by the Commvault software may not be listed in our System Requirements. When possible, Commvault provides information on any known issues related to these minor releases or service packs. In some cases, these minor releases or service packs affect how the Commvault software works. Commvault software may experience changes in functionality as the result of the third-party minor release or service pack. These changes are beyond the control of Commvault. Platforms that are supported in the current version of Commvault software may not be supported in earlier versions of the software. Contact your software provider to ensure that third-party minor releases or service packs are compatible with the Commvault software. Additional considerations regarding minimum requirements and End-of-Life policies from third-party vendors also apply.