To configure a database with a Time Machine protection mode that includes the Log Catchup operation in NDB, the most essential component is a Service Level Agreement (SLA) that supports continuous log retention. The Log Catchup operation enables point-in-time recovery (PITR) by replaying transaction logs from a specified point, ensuring minimal data loss and meeting Recovery Point Objective (RPO) requirements. This functionality depends on the Time Machine being configured with an SLA that includes the "Continuous Log Retention" option, which ensures transaction logs are captured and retained continuously alongside snapshots.

Option A is incorrect because a daily snapshot alone is insufficient without log retention to enable Log Catchup.

Option B is incorrect because an SLA retention schedule for daily snapshots does not inherently include continuous log capture, which is required for Log Catchup.

Option C is correct as it specifies the Continuous Log Retention option, the critical feature for enabling Log Catchup in a Time Machine SLA.

Option D is incorrect because while frequency settings are important, they are secondary to selecting an SLA with continuous log retention as the foundational requirement.

This configuration ensures robust data protection and recovery capabilities tailored to the database’s needs.

References

Nutanix Database Service (NDB) User Guide, Chapter 5: Configuring Time Machines, Section: Setting Up SLAs with Log Catchup

Nutanix Support & Insights, Knowledge Base Article: "Configuring Time Machine with Log Catchup in NDB"

Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Blueprint, Section 5: Protect Databases Using Time Machine