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1. Recommended Pre Upgrade Checks

   1. Operating System Checks

      1. Check free disk space
      2. Baseline CPU and memory utilisation
      3. If possible, a snapshot of the server would be recommended 

   2. FirstWave Module Checks

      1. opCharts node status checks - take note of the node and status counts
      2. opHA - on the primary opHA home page, confirm all pollers and primary are showing all green. 

2. Post Upgrade Checks

1. 1. Operating System Checks

      1. Check free disk space
      2. Confirm CPU and memory utilisation is within pre upgrade baseline levels

   2. FirstWave Module Checks

      1. opCharts - confirm node and status counts are the same or similar post change.
      2. opHA - on the primary opHA home page, confirm all pollers and primary are showing all green. 

Upgrade Rollback 

If there are issues after the upgrade, it's recommended that the upgrade is rolled back to ensure server functionality is restored as soon as possible. Before rollback, FirstWave recommend that you capture support zips for NMIS and OMK modules so the FirstWave support team can analyse any issues that might have occurred.