https://userapps.support.sap.com/sap/support/knowledge/en/3426504
3426504 - SAP HANA Secondary Site Not Started After Upgrade | SAP Knowledge Base Article
SAP HANA secondary site indexserver doesn't start after upgrade, HANA parameters under the Tenant DB global.ini [system_replication] sections were removed...
sap hanasecondary sitenot started