Job Priorities

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    Resources in the backup infrastructure are limited. To make sure that the most crucial jobs are the first to get free resources to provide the reliable data protection, Veeam Backup & Replication uses the system of priorities to allocate resources to different jobs.

    The resource scheduler within Veeam Backup & Replication uses several stages to prioritize jobs and provide free resources to them:

    1. Type — at the first stage, the resource scheduler identifies the priority of the jobs awaiting free resources based on their type:
    1. Backup restore jobs — these jobs have the highest priority (800) and are the first to get free system resources.
    2. Continuous data protection jobs — these jobs have priority (700).
    3. SnapshotDeleter jobs — these jobs have priority (600).
    4. Quick backup jobs — these jobs have priority (500).
    5. High priority jobs — jobs with the enabled High priority option have priority (400). You can enable the High priority option for the following jobs: backup jobs, replication jobs, agent jobs managed by backup server, file share backup jobs.
    6. Regular backup and replication jobs — these jobs have priority (300).
    7. Backup copy jobs — these jobs have priority (200).
    8. Archive jobs — these jobs have the lowest priority (100) and are the last to get free system resources.
    1. Priority — at the second stage, the resource scheduler identifies the priority of the jobs within each type group from the first stage based on their startup type:
    1. Scheduled VSS proxy jobs — the jobs with the configured job schedule and using a VSS proxy have the highest priority (40) within the group and are the first to get free system resources.
    2. Scheduled jobs — the jobs with the configured job schedule have priority (30) within the group.
    3. Manually started VSS proxy jobs — the manually started jobs using a VSS proxy have priority (20) within the group.
    4. Manually started jobs — the manually started jobs have the lowest priority (10) within the group and are the last to get free system resources.
    1. Start time — if the jobs have the same type and priority, resources are first allocated to jobs that were started earlier.

    You can check the job type and priority of a certain job in service logs. For more information on logs, see Logging.

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