Agent-based backup for Windows Operating System
  • 16 Feb 2021
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Agent-based backup for Windows Operating System

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Article Summary

Overview: 

OS backups of Windows servers will include all drives, folders, and files by default, unless otherwise requested, including SYSTEM STATE.

Default File Exclusions:   .edb, .ldf, .mdf, .ndf, .nsf, .ntf, .stm, pagefile.sys, win386.swp

OS Version & Requirements: http://documentation.commvault.com/hds/v11/article?p=system_requirements/windows.htm

  • Commvault will attempt to install .NET Framework 4.0 if not already installed. Note: that .NET Framework 4.0 can co-exist with other versions of the software. 

Compatible Windows Versions

A minimum Service Pack 1 is required for all Windows versions (if available)


    • Windows Server 2019
    • Windows Server 2016
    • Windows 10
    • Windows Server 2012/R2 Editions
    • Windows 8/8.1
    • Windows Server 2008/R2 Editions
    • Windows 7

Verify VSS (All Windows Versions)

  • Open an elevated command prompt and enter “vssadmin list writers
  • Every status should be 1. If the VSS status is not a 1, please try to restart the VSS service “Volume Shadow Copy” and run “vssadmin list writers”. If all writers are still not shown with a status of 1 please inform the Systems Delivery Engineer of your results.

Disk Space

  • 5 GB of disk space available on the C:\ drive
  • Enough disk space to perform a VSS snapshot. The default settings are usually sufficient.

Local (Windows) and Perimeter Firewalls

  • Please, ensure there are no port restrictions between your network and the Expedient Commvault servers. If you have specific security constraints which require you to restrict traffic to only specific ports, please let your Expedient Project Manager know and we can provide you with more detailed information.

Default Install Path:

  • C:\Program Files\Commvault\ContentStore

 Physical Servers:

  • Offsite customer to provide storage and NIC drivers (needed to create ISO specific to your environment for performing full system restores).

Special Considerations:

  • A File System Agent may need to be installed in order to process a restore request for any virtual machine that is over 1 TB in size and is subscribed Commvault image-based backups.

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