Warning: If putting only one node into maintenance mode, synchronization need not occur. If both HA nodes need to be placed into maintenance, a forced synchronization will need to occur.
For major SoftNAS StorageCenter upgrades that require downtime, SoftNAS has provided a way to protect replications and SNAP HA pairings while also keeping storage connectivity and data access uninterrupted. To check whether an upgrade is required, click Settings > Software Updates in the main menu on the left.
Sync & Deactivate
Sync SNAP HA in StorageCenter
Ensure that both nodes are in sync by forcing the event through SoftNAS StorageCenter. Sign in to each node of the HA pair to be upgraded in separate browsers to more easily switch between nodes.
Note: Ensure that target and source nodes have been established. For the purposes of this document, the following terminology will be used:
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Original Status
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Document Reference
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Source Node
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Node A
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Target Node
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Node B
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In the SoftNAS StorageCenter interface for Node A, navigate to the SnapReplicate / SNAP HA menu. Click Action and then Replicate Now as shown below.
To verify sync completion, watch the Event Log at the bottom of the UI. Click Refresh to ensure current status visibility if necessary.
Deactivate
In the SoftNAS StorageCenter interface for Node A, navigate to the SnapReplicate / SNAP HA menu. Click Action and then Deactivate.
Upgrade Nodes & Transfer Workload
This critical section ensures that storage and compute capacities remain at expected levels during a disruptive update.
Upgrade Node B
Navigate to the SoftNAS StorageCenter for Node B, then to Settings > Software Updates and click Apply Update. Click Yes to confirm.
Wait for the confirmation that the update has been successful and allow the browser to refresh itself.
Reactivate
In the SoftNAS StorageCenter interface for Node A, navigate to the SnapReplicate / SNAP HA menu. Click Action and then Activate. Click Yes to confirm.
If only one node needs maintenance, then the process ends here, with the reactivation of SnapReplicate. However, if both nodes require maintenance, additional steps must occur:
Deactivate
In the SoftNAS StorageCenter interface for Node B, navigate to the SnapReplicate / SNAP HA menu. Click Action and then Deactivate. Click Yes to confirm.
Upgrade Node A
Navigate to the SoftNAS StorageCenter for Node A, then to Settings > Software Updates and click Apply Update.
Wait for the confirmation that the update has been successful and allow the browser to refresh itself.
Restore HA
Reactivate Replication
In the SoftNAS StorageCenter interface for Node B, navigate to the SnapReplicate / SNAP HA menu. Click Action and then Activate. Click Yes to confirm.
The system will then automatically synchronize.