The software provides an automated workflow to redistribute deduplication database (DDB) partitions from overloaded MediaAgent (MA) access paths to the best available MediaAgent access paths.
For each partition that is migrated, the workflow triggers a DDB move operation to transfer the partition from the source MediaAgent to the destination MediaAgent.
Load Balancing Modes
The workflow supports three operational modes for load balancing:
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Global Mode
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In Global mode, the workflow evaluates and balances all overloaded storage pools within the CommCell environment.
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Load distribution is performed per partition. Partitions are moved only among MediaAgents and access paths associated with the same deduplication database.
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The workflow runs in Global mode every 15 days.
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Add MediaAgent Mode
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This mode is triggered when a new MediaAgent is added or when a DDB role is assigned to an existing MediaAgent in an overloaded storage pool.
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The workflow attempts to redistribute the load using the newly added MediaAgent.
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Unlike Global mode, Add MediaAgent mode does not wait for 15 days to initiate. It runs immediately upon detecting an eligible MediaAgent addition.
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Global + Add MediaAgent Mode
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This mode is a combination of Global and Add MediaAgent modes.
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It is triggered if both of the following conditions are met:
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It has been 15 days since the last successful workflow run with DDB moves.
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A MediaAgent or DDB role has been newly added to a pool.
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The workflow then performs load balancing based on both conditions.
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Additional Information
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The workflow is scheduled to run daily, but the schedule is disabled by default.
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For new installations, the workflow schedule is enabled by default.
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Sealed and offline partitions are excluded from migration.
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DDB move jobs are launched in batches of 5, running in parallel.
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After successful partition migration, the software sends an email notification to the admin user with details of the changes.