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Note: SoftNAS recommends a reboot of your system be performed prior to performing a system upgrade. This ensures that the upgrade is performed on a stable system. 

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:

Original Status

Document Reference

Source Node

Node A

Target Node

Node B



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.

Deactivate HA on Node A

In the SoftNAS StorageCenter interface for Node A, navigate to the SnapReplicate / SNAP HA menu. Click Action and then Deactivate. This will prevent the upgrade process from triggering a failover. 

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.

Activate HA and Perform Takeover

In the SoftNAS StorageCenter interface for Node B, navigate to the SnapReplicate / SNAP HA menu. Click Action and then Activate. Click Yes to confirm.

After activating HA on Node B, move to Node B, and perform a Takeover, making Node B the primary. Navigate to the SnapRepicate/SNAP HA menu. Click Action, and then Takeover.

This will fence off and shutdown Node A, and HA will be deactivated.

Node B will now be fully updated.

Upgrade Node A

Power on Node A.  HA will still be deactivated on this node as it was shut down by the takeover operation. 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.

Activate HA on Node B

In the SoftNAS StorageCenter interface for Node B, navigate to the SnapReplicate / SNAP HA menu. Click Action and then Activate. Click Yes to confirm.

Perform Takeover

After activating HA on Node B, move to Node A , and perform a Takeover, making Node A once again the primary. To perform the takeover, once again navigate to the SnapRepicate/SNAP HA menu. Click Action, and then Takeover.

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.