I am setting up AlwaysOn availability group for Disaster Recovery (DR) in the test environment. For AG1, node1 and node2 (synchronous commit/automatic failover) are in DC1; node 3 and node 4 (Asynchronous commit/manual failover) are in DC2 and file share witness is in DC3. When DR event occurs, 2 nodes in DC1 will be gone. Since DR nodes are set up as an Asynchronous commit, AG status is resolving. I will need to failover manually to bring AG group to a synchronized state. I want to use powershell to do failover with data loss. When I run [the following powershell to failover](https://learn.microsoft.com/en-us/powershell/module/sqlps/switch-sqlavailabilitygroup), I am getting the error.

```
Switch-SqlAvailabilityGroup -Path SQLSERVER:\Sql\SQLDRPOCA03\DEFAULT\AvailabilityGroups\SQLDRPOCAG

```

> 
> Switch-SqlAvailabilityGroup : The availability replica for availability group 'SQLDRPOCAG' on this instance of SQL Server cannot become the primary replica. One or more databases are not synchronized or have not joined the availability group.
> 
> 
> If the availability replica uses the asynchronous-commit mode, consider performing a forced manual failover (with possible data loss). Otherwise, once all local secondary databases are joined and synchronized, you can perform a planned manual
> 
> 
> failover to this secondary replica (without data loss). For more information, see SQL Server Books Online.
> 
> 
> 

Is it possible to use powershell to do manual failover?