As for connection method for accessing VM guest OS, Veeam first tries to connect to the VM over network using RPC and then by VMware VIX channel through VMware Tools (for Windows guest only). It is installed only during VSS quiescence procedure and removed immediately after the processing is finished, producing very low impact on VM performance and stability. To coordinate proper VSS and indexing activities, Veeam Backup & Replication deploys a small executable component inside a VM. VMware Tools quiescence with VMware Script processingĮnable Veeam Application-Aware Image ProcessingĮnable Veeam Application-Aware Image Processing and InGuest Scriptsĭisable Veeam Application-Aware Image Processing Windows and VMware VSS-supported applications (without known user for Guest OS processing) Linux (with applications and known user for Guest OS processing) To select the necessary options, refer to the table below. It is recommended to use the VM guest processing options for interaction with VMs. Note that you can use pre- and post-job scripting to automate job global settings from the Veeam Backup & Replication server itself.
When on the Guest Processing step of the job wizard, you are presented with the variety of options (as described in detail in the User Guide ( ). Finally, log file truncation is performed with VSS (for Microsoft SQL Server and Exchange Server) or using native Oracle commands (for Oracle databases on Linux).Backup data transfer and snapshot commit is performed.Veeam Backup & Replication runs post-thaw script (if any) for the Microsoft Windows/Linux guest OS.Then VSS quiescence of the VM is performed, including restore awareness settings.Veeam Backup & Replication runs pre-freeze script (if any) for the Microsoft Windows/Linux guest OS with applications that utilize other means of VM quiescence.First, Veeam Backup & Replication performs guest OS inventory to find out if there is a VSS-aware application running inside a VM.Support for application log truncation (Microsoft SQL Server and Exchange Server) Pre-VSS preparation for specific applications (e.g. Support for consistent backup on Windows guest Key features of both methods are illustrated by the following table: Feature Two methods are available for bringing VM file system and applications into consistent state: VMware Tools quiescence and Veeam's proprietary application-aware image processing (using Microsoft VSS or Linux scripts). When configuring Veeam backup and replication jobs, you can specify how the transactionally-consistent backup images of VMware VMs should be created. Sizing Targets for WAN Accereration Relationship Protecting Veeam Backup & Replication Configuration Veeam Backup & Replication Best Practices
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