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This section details how to upgrade a Swarm license and cluster nodes for non-CSN clustersnodes booted without an SCS or CSN.

For release-specific guidance, see How to Upgrade Swarm and CSN Upgrades.

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  1. Download the upgraded Swarm software from the Downloads section on the DataCore Support Portal.

  2. Important: Review the Swarm Release Notes for upgrade instructions specific to the version downloaded.

  3. Important: Run the Storage Settings Checker and resolve any configuration issues with DataCore Support.

  4. Locate the node configuration data, backup configuration files, and license files.

  5. Prepare the node configuration data on new USB flash drives or on a centralized configuration server.

  6. Verify the health of all cluster nodes.

  7. Schedule an off-line window for the cluster down timedowntime.

Review the release notes included with the new boot devices prior to starting the cluster upgrade. The release notes contain information about feature changes, operational differences, and any issues affecting how a storage cluster processes and stores data.

Remove USB flash drives from the running nodes to view and back up the configuration and license files. USB flash drives or the configuration server can be updated using the instructions in the README.txt file found in the latest Swarm installation package. To upgrade an existing USB stick, after verifying the settings changes as earlier discussed, simply replace the existing kernel and fsimage file with the fsimage and kernel file from the new software version bundle.

Validate the node or cluster configuration file to verify there are no deprecated parameters needing to be removed or renamed after performing the upgrade.

See Configuring the Nodes for how to set the parameters in the node or cluster configuration files.

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Initiating the disk recovery process is not a concern if all nodes are shut down within several seconds of each other. Suspending volume recovery may also be chosen from the Setting window on the Swarm Admin Console to prevent recovery from kicking off while nodes reboot in to the new software version.

See the Suspend Setting.