I am having some problems with configuring the MetaCacheDatabase on Exchange 2019.
I have created a test environment with two Exchange 2019 CU9 virtual servers. There are 4 Databases, 2 Active on each server. I have one DAG.
I followed the official guide at https://docs.microsoft.com/en-us/exchange/high-availability/database-availability-groups/metacachedatabase-setup?view=exchserver-2019, however my experience is that it doesn't seem to be working properly.
I have some questions.
The Guide says that you must have Raw SSD drives. I left my SSD drives as Raw and the disks were automatically formatted with the mount points added. Some articles say that you must manually format the drives (Is this old information based on older MCDB Scripts)?
If I follow the guide the MCDB for the 2 active databases on Server A get created and the MCDB is Healthy for those (Not the passive copies).
The other two databases are on Server B. If I use the MCDB command to failover from Server A the databases on server B don't change to healthy
It is hard to describe what is happening but I have been working on this for weeks and just don't seem to be seeing any consistency. I have never seen all four Databases Healthy. I have seen both servers with the MCDB Disabled or Offline at the same time even after leaving overnight.
When I run the commands I don't see any errors.
Am I missing a vital piece of information from the guide that is maybe known elsewhere?
I ran the following commands in order:
Manage-MCDB -DagName DAG -ConfigureMCDBPrerequisite -SSDSizeInBytes 21474836480 -SSDCountPerServer 1 -verbose
Manage-MCDB -DagName DAG -ServerAllowMCDB:$true -ServerName "ServerA"
Manage-MCDB -DagName DAG -ConfigureMCDBOnServer -ServerName "ServerA" -SSDSizeInBytes 21474836480 -verbose
Manage-MCDB -DagName DAG -ServerName "ServerA" -ForceFailover $true
Manage-MCDB -DagName DAG -ServerName "ServerB" -ForceFailover $true
Is the above order of commands correct and do I need to perform any manual intervention after running the failover such as manually formatting the SSD again?
Sorry for the ramble