During a 2025 NCP-DB readiness review, MetroGov Digital's Phoenix operations team runs EDB EPAS 16 on Nutanix Database Service 2.6 with AOS and Prism 6.10. A DBA must schedule maintenance while respecting a business blackout in the approved Tuesday 21:00-22:00 window. The storage lead warns that manual changes outside NDB will not be accepted after the outage. How should the team proceed in the supported workflow?