Upgrading from a Previous Version

You can upgrade directly to the current version of the Historian (2023) from Historian 2017 and later versions. For System Platform Enterprise, the only version supported for upgrade is Historian 2020 R2 SP1.

You should upgrade the Historian Server before upgrading Historian remote IDAS nodes. Remote IDAS nodes that are not upgraded will remain fully functional. However, it is strongly recommended that you upgrade them to Historian 2023 to incorporate minor improvements and simplify further upgrades and maintenance.

If you have been using replication, when upgrading historian nodes, upgrade the tier-2 historian node first and then the tier-1 historian node.