Where are the FSM Alarm and Events logs stored and what is the size limit?
Alarm logs and event logs are stored on SQL Server.
FSM is provided with SQL Server Express 2014 (up to version 5.6). Limit of SQL server express database is 10Gb of data.
In case you need to store more data, you can upgrade SQL Server to upper version (like standard).
In 10Gb of space we can store more than 35 million of records.
In case is not enough you can bypass this limit using a upper license of SQL Server where limit is only the disk space.