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How to select primary replica from availability group?
@primary_replica: a linked server that points to a SQL Server instance from which you want to read logins and server roles. If left blank, the procedure will try to select the primary replica from an Availability Group. This will fail if there is no Availability Group or if there is more than one.
Can a primary replica read from a secondary replica?
AlwaysOn Availability Groups are obviously an option. I understand we can read from secondary replicas, unlike DB mirroring for example. Can we spread the write load during normal operations, by using each server in the cluster to be a primary database/replica for some databases, and a secondary database/replica for others?
How many AGS are in an availability group?
You can and that’s one of the beautiful things with availability groups over traditional clustering. You’ll need to set up two (or more if you wanted) AGs, one would initially have SQL01 as it’s primary node and contain db01-db05 and the other would initially have SQL02 as it’s primary node and contain db06-db10.
What are things that are not included in AGS?
Things that are not included in AGs include logins, SQL Server Agent jobs, SSIS packages stored in SQL Server, linked servers and server settings. You could sync these manually (as is often the case), but wouldn’t you just love to have an automated process do all this for you?
Can a database not be a member of the availability group?
The database is already in place on the primary replica. SQL Server replicates the database to the secondary replicas during a later step. Will not be a member of the availability group: Restore a copy of the site database to the server that will host the primary replica of the group.
Is there a way to sync logins between replicas?
I’ve created a stored procedure that will fetch all logins, server roles and server role memberships from a primary replica and sync those to the local (secondary) replica. Head on over to the Downloads page and get SyncLogins. You’ll need a linked server from your secondary replica to the primary replica.
Can you use an asynchronous replica in Configuration Manager?
You can use an asynchronous replica in the availability group that you use with Configuration Manager. You don’t need to run the configuration scripts required to configure a synchronous replica, because an asynchronous replica isn’t supported for the site database.