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PowerScale OneFS Job Engine
Executive summary Job Engine Multiple jobs processing Job exclusion sets Job Engine management Job Engine orchestration and job processing File system protection and management
Introduction
FlexProtect
MultiScan
AutoBalance
Collect
MediaScan
IntegrityScan
Jobs and OneFS licensing
Job Engine monitoring and reporting Job Engine best practices and considerations Conclusion

AutoBalance

AutoBalance

  • The goal of the AutoBalance job is to ensure that each node has the same amount of data on it so that data is evenly balanced across the cluster. AutoBalance, along with the Collect job, runs after any cluster group change, unless there are any storage nodes in a down state.

    Upon visiting each file, AutoBalance performs the following two operations:

    • File-level rebalancing
    • Full-array rebalancing

    For file-level rebalancing, AutoBalance evenly spreads data across the cluster’s nodes to achieve balance within a particular file. With full-array rebalancing, AutoBalance moves data between nodes to achieve an overall cluster balance within a 5 percent delta across nodes.

    Also available is an AutoBalanceLin job, which automatically runs in place of AutoBalance when the cluster has a metadata copy available on SSD. AutoBalanceLin provides an expedited job runtime.