All checks take place on a schedule, some are daily and the rest range from every 60 seconds to 30 minutes.
The checks we run are as follows:
Uptime Antivirus Backups Disk drives Disk space Drive errors and raid failures Event log errors Server performance Workstation performance Performance checks Processor utilisation/performance Network performance Bandwidth Memory (RAM) status Mobile devices checking in Windows services Server chassis intrusion Failed logins Expired passwords Suspicious ports Windows updates status