Dear SAP Experts and Architects,
Imagine situation where you are setting up S/4HANA system and SAP Fiori front end server in hub deployment option. Its "Mission Critical" system where even slightest downtime results in enormous financial lose for the company.
How would you go about setting up High Availability and Zero Downtime Maintenance ( not to be confused with SUM procedure, I am talking about any maintenance - OS Level, DB, Parameter change etc...)?
For this hypothetical scenario lets consider we have unlimited financial resources.
The only constrain is you have to run your Application servers and HANA on SUSE Linux.
I am looking forward to your answers and suggested reading materials!
Thank you
Zero downtime is not an easy topic. Not sure what are you looking for, but I'd start the research here:
https://www.suse.com/docrep/documents/j6eeme6e10/three_steps_toward_zero_downtime.pdf
I think SUSE claimed they can support system with 99,9999% of uptime (which means around 30 sec of downtime per year).