Microsoft Azure Stack HCI: System Requirements


For Microsoft Azure Stack HCI support, you must install the VSA on all nodes in the Azure Stack HCI cluster.

Azure Stack HCI Version

The Commvault software is supported with Microsoft Azure Stack HCI version 20H2 and more recent versions.

Virtual Machine Operating Systems

You can back up virtual machines that have any of the guest operating systems that are supported by the Azure Stack HCI platform.

Hard Drive

100 GB is recommended.

Hardware Specifications

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

Allocation Unit Size of the NTFS Volumes

The cluster size or the allocation unit size of an NTFS volume in a virtual machine must be a multiple of 1024 bytes. You can set the cluster size before formatting a volume. The default cluster size is 4096 bytes.

Microsoft Visual C++

The following Redistributable Packages are installed automatically. The Redistributable Packages can co-exist with other versions of the Commvault software.

  • Microsoft Visual C++ 2010 Redistributable Package

  • Microsoft Visual C++ 2013 Redistributable Package

  • Microsoft Visual C++ 2017 Redistributable Package

Notes on Virtual Server Agent Installations

The Virtual Server Agent is installed directly onto the Azure Stack HCI Server.


Third-party maintenance (minor) releases or feature releases 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 feature releases. In some cases, these minor releases or feature releases affect how the Commvault software works. Commvault software may experience changes in functionality as the result of the third-party minor release or feature releases. 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 feature releases are compatible with the Commvault software.

Additional considerations regarding minimum requirements and End-of-Life policies from third-party vendors also apply.