Hi @abhrfh ,
Welcome to Microsoft Q&A!
Please refer to Analysis Services with Always On Availability Groups to get the steps:
If you are using availability groups as your high availability solution, you can use a database in that group as a data source in an Analysis Services tabular or multidimensional solution. All of the following Analysis Services operations work as expected when using an availability database: processing or importing data, querying relational data directly (using ROLAP storage or DirectQuery mode), and writeback.
And you could download SSAS Failover Cluster document from this link.
Best regards,
Carrin
If the answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.