Hi @mukki mehra
Here you can read about;
- Always On availability groups; A high-Availability and Disaster-Recovery-Solution
The way your configuration work right, You could do many move but your best bet is to go over here and read about what you really need;
Prerequisites, Restrictions, and Recommendations for Always On availability groups
Make sure configuration is using the same exploitation system, is not domain controlled and ensure that each computer is a node in a WSFC.
You already have 2 clustered instance with sharding , see if you meet the requirements first, and make sure to have a backup failover but also check out requirements for your config understanding specifics clustering guidelines recommended. Failover Cluster Requirements
APPLIES TO: YesSQL Server NoAzure SQL Database NoAzure Synapse Analytics (SQL DW) NoParallel Data Warehouse
Windows Server Failover Clustering (WSFC) with SQL Server
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