This alarm is raised when the Tempdb version store is too large for your environment.Edit me
There are two version stores in Tempdb. The online index build version store is used for online index builds in all databases. The common version store is used for all other data modification operations in all databases.
Note: This alarm is disabled by default. Ensure the thresholds for this alarm are configured appropriate to your environment before enabling the alarm. Use a Spotlight Client to Configure | Alarms.