Server SLA (Domain)
1. Verify backups are working
2. Check disk usage
3. Monitor RAID alarms
4. Update your OS
5. Check remote management tools
6. Check for hardware errors
7. Check server utilization
**additionally**
Maintain Active Directory Services
Change passwords
Maintain DHCP, DNS, & WINS domain functions
Maintain Domain controller replication svc & certificate servers
Group Policy Management
Monitor event logs & apply fixes as required