Basis & Technology
What is Near-Zero Downtime Maintenance (nZDM)?
Techniques that minimize business downtime during upgrades or conversions by doing most work while the system runs.
SUM offers nZDM options, and SAP offers a Near-Zero Downtime Technology service for conversions. Changes during uptime are recorded and replayed. These approaches add test rehearsals because of their complexity.
Related terms
Software Update Manager
SAP's tool for system updates, upgrades, and S/4HANA conversions of ABAP systems.
Business Downtime
The period when users cannot use a system during an upgrade, conversion, or cutover.
Cutover
The transition period and set of activities moving a business from the legacy system to the new system at go-live.
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