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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 (and or full/incremental backup depending on your organisation's backup strategy) of the server should be recommended 

   2. FirstWave Module Checks

      1. opCharts node status checks - take note of the node and status counts
      2. opEvents - confirm events are being received on the pollers and (where applicable in a opHA environment) forwarded to the primary.
      3. opHA - on the primary opHA home page, confirm all pollers and primary are showing all green.  If possible screenshot the server/en/omk/opHA/verify page for validation after upgrade
      4. NMIS9 - ensure custom models and model edits are in the /usr/local/nmis9/models-custom directory NOT the models-default directory
      5. opConfig - At this time upgrades will overwrite custom pharsebook's (pb's), if you have custom pb's make a copy and save to separate directory

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. opEvents - confirm events are being received on the pollers and forwarded to the primary.
      3. opHA - on the primary opHA home page, confirm all pollers and primary are showing all green. 

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