VSS Quiescing Support
Microsoft Volume Shadow Copy Service (VSS) quiescing is supported for virtual machines running Windows Server 2003, XP, or later versions of Windows. vSphere Replication does not support quiescing for earlier versions of Windows, such as Windows 2000. The quiescing option is unavailable for unsupported operating systems.
NOTE: vSphere Replication 8.7 does not support VSS quiescing on vSphere Virtual Volumes.
When you enable quiescing, vSphere Replication first attempts application level quiescing. If application level quiescing fails, vSphere Replication attempts file-system level quiescing.
Operating System |
Application Quiescing |
File System Quiescing |
Windows Server 2025 |
YES (ESXi 8.0.1 or later) |
YES (ESXi 8.0.1 or later) |
Windows 11 |
NO |
NO |
Windows 10 |
NO |
YES |
Windows 8.1 |
NO |
YES |
Windows Server 2022 |
YES (ESXi 8.0 or later) |
YES (ESXi 8.0 or later) |
Windows Server 2019 |
YES (ESXi 7.0.3 or later) |
YES (ESXi 7.0.3 or later) |
Windows Server 2016 |
YES |
YES |
Windows Server 2012 R2 |
YES* |
YES |
Windows Server 2012 |
YES* |
YES |
Windows 8 |
NO |
YES |
Windows 7 |
NO |
YES |
Windows Server 2008 R2 |
YES* |
YES |
Windows Server 2008 |
YES* |
YES |
Windows 7 |
NO |
YES |
Windows Vista |
NO |
YES |
Windows Server 2003 R2 |
YES |
YES |
Windows Server 2003 |
YES |
YES |
* vSphere Replication performs application quiescing on Windows Server 2008, Windows Server 2012 and Windows Server 2016 by creating a snapshot of the virtual machine. See Working with Microsoft Shadow Copy and Linux Backup Implementation for Windows Server 2008 and 2012 limitations.
-
The virtual machine must be running on a 7 or later host.
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The UUID attribute must be enabled. It is enabled by default for virtual machines created on 4.1 or later. For details on enabling this attribute, see Enable Virtual Machine Application Consistent Quiescing in Working with Microsoft Shadow Copy.
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The virtual machine must use SCSI disks only and have the same number of free SCSI slots as the number of disks. Application-consistent quiescing is not supported for virtual machines with IDE or SATA disks.
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The virtual machine must not use dynamic disks.