Can we cleared alarms be restored in Spectrum?
There is no save state for the Alarms table. Once active alarms are cleared there is no way to recover them.
The Alarms table is not preserved in SSDB Backup or Archive Manager.
A fault-tolerant Spectrum configuration will maintain the alarms tab if the primary is down, but if the alarms are cleared while the primary is active they would also be cleared from the secondary during the alarm synchronization process.