Earlier quoted context omitted.
It's Sunday. Please wait for Monday office hours for your immediate response.
At work we have a 24/7 20min response time clause. If the phone for work emergency calls we are ready to help in 20 minutes at any time around the clock even on Sunday. Why would you do anything else for your sysop/sysadmin?
You need at least 10 sysop/sysadmin to achieve anything close to that SLA, with a sustainable rota. Contrary to the parent posters who believe it can be done with THE right guy.