Veeam Backup & Replication 10
User Guide for Microsoft Hyper-V
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Application-Aware Processing

If you add to the replication job VMs running VSS-aware applications, you can enable application-aware processing to create transactionally consistent replicas. The transactionally consistent replica guarantees proper recovery of applications on VMs without data loss.

To enable application-aware processing:

  1. Select the Enable application-aware processing check box.
  2. Click Applications.
  3. In the displayed list, select the VM and click Edit.

To define custom settings for a VM added as a part of the VM container, you must include the VM in the list as a standalone object. To do this, click Add and choose a VM whose settings you want to customize. Then select the VM in the list and define the necessary settings.

  1. On the General tab, in the Applications section specify the VSS behavior scenario:
    • Select Require successful processing if you want Veeam Backup & Replication to stop the replication process if any VSS errors occur.
    • Select Try application processing, but ignore failures if you want to continue the replication process even if VSS errors occur. This option is recommended to guarantee completion of the job. The created VM replica image will not be transactionally consistent but crash consistent.
    • Select Disable application processing if you do not want to enable quiescence for the VM.
  1. [For Microsoft Exchange, Microsoft SQL and Oracle VMs] In the Transaction logs section, specify if Veeam Backup & Replication must process transaction logs or copy-only VM replicas must be created.
  1. Select Process transaction logs with this job if you want Veeam Backup & Replication to process transaction logs.

[For Microsoft Exchange VMs] With this option selected, the runtime process running on the VM guest OS will wait for replication to complete successfully and then trigger truncation of transaction logs. If the replication job fails, the logs will remain untouched on the VM guest OS until the next start of the runtime process.

[For Microsoft SQL Server VMs and Oracle VMs] You will have to specify settings for transaction log handling on the SQL and Oracle tabs of the VM Processing Settings window. For more information, see Transaction Log Settings: Microsoft SQL and Transaction Log Settings: Oracle.

  1. Select Perform copy only if you use another backup tool to perform VM guest level backup or replication, and this tool maintains consistency of the database state. Veeam Backup & Replication will create a copy-only replica for the selected VM. The copy only replica preserves the chain of full/differential backup files and transaction logs on the VM. For more information, see Microsoft Docs.

Application-Aware Processing 

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