Upgrade method

Before upgrading, determine if your SCADA system can go offine for the upgrade and what availability is required for historical information.

There are two upgrade methods. Click an option and follow the instructions:

• Offline upgrade: system shut down is required during upgrade. If your SCADA system can go offline during the upgrade or the availability and loss of historical information is not an issue, use this method.

• Online upgrade: 

  • System shut down is not required during upgrade. If your SCADA system cannot go offline during the upgrade or the availability and loss of historical information is not an issue, use this method.

  • At least one pair of redundant servers must be in use and available.

  •  system shut down is not required during upgrade.