SAP S/4HANA Administration · High Availability

Before you trigger a Rolling Kernel Switch, what must you do with the old and new kernel files, and why is the backup non-negotiable?

Answer locked. Get the free KnowCard app to reveal it — plus spaced-repetition review so it actually sticks.

This is one card from the KnowCard library — thousands more across SAP, Linux, Python and more. In the app you get the answer, AI explanations, and cards that come back right before you would forget them. Free to start on iOS, Android or the web.

More in High Availability

Your SAP HANA update normally needs the database shut down. How does running HANA in a high-availability setup with System Replication shrink that downtime to almost nothing?

What single objective drives every high-availability decision for SAP S/4HANA, and why is protecting the SAP software layer alone not enough?

The two timeout parameters of a Rolling Kernel Switch — what do their defaults control, and why must the start-wait value stay above rdisp/server_startup/max_time?

Once a Rolling Kernel Switch is running, how can you monitor its progress and where is it logged for later review?

Your Rolling Kernel Switch on a busy production system is only half done after two days — why is dragging it out much longer a bad idea?

How can you patch SAP HANA to a newer revision with almost no downtime by leaning on System Replication?

Start learning today

Free to start — download the app or use it in your browser.