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What is always on availability group?
Always On availability groups provide high availability, disaster recovery, and read-scale balancing. These availability groups require a cluster manager. In Windows, failover clustering provides the cluster manager. In Linux, you can use Pacemaker.
Why does db go to suspect mode?
The main reason why the database goes into suspect mode is because the primary file group has been damaged and the database cannot be recovered during the startup of the SQL Server. Also, the database can get in the SUSPECT state for multiple other reasons, which can include: a damaged LOG file or a damaged MDF file.
What happens to database in AlwaysOn availability group?
Assume that an availability database that is defined in an AlwaysOn availability group transitions to a Recovery Pending or Suspect state in SQL Server. If this occurs on the availability group’s primary replica, database availability is affected.
What happens if I fail over the availability group?
If you ever manually fail over the availability group to this secondary replica, you can create a new set of database snapshots on another secondary replica, redirect clients to the new database snapshots, and drop all of the database snapshots from the now primary databases.
What to do if AlwaysOn DB is in suspect state?
To resolve this issue, take the following general actions: Remove from the availability group the replica that is hosting the damaged database when the database is in the secondary role. Resolve any issues that are affecting the system and that might have contributed to the database failure. Restore the replica to the availability group.
Why did my database go into suspect mode?
Generally, databases go into suspect mode because disk failure ,io.. Was secondary SQL server service or agent service restarted recently? And please share the complete error message, without error message it is very hard to understand the problem.