The "Savings over traditional cloning" metric in the Data Usage widget on the NDB dashboard reflects the efficiency of NDB’s cloning technology compared to traditional full-copy cloning methods. NDB leverages Nutanix’s near-zero byte cloning capability, which creates lightweight clones by sharing base data and only storing changes (deltas). This metric specifically quantifies the disk space saved by using these efficient clones instead of duplicating entire datasets, as would occur in traditional cloning. It highlights NDB’s storage optimization for database provisioning and management.
Option A is correct as it directly ties to NDB’s near-zero byte cloning technology, a core feature for space efficiency.
Option B (Compression) is incorrect because compression is a separate storage optimization technique not specifically tied to cloning savings.
Option C (Shadow clones) is incorrect because shadow clones are a Nutanix feature for caching, not the cloning mechanism used by NDB Time Machines.
Option D (Deduplication) is incorrect as deduplication, while related to storage savings, is not the primary mechanism reflected in this cloning-specific metric.
This metric helps administrators quantify the benefits of NDB’s cloning approach in terms of storage utilization.
References
Nutanix Database Service (NDB) User Guide, Chapter 1: Introduction to NDB, Section: Understanding Cloning and Storage Efficiency
Nutanix Support & Insights, Technical Note: "Interpreting NDB Dashboard Metrics"
Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Blueprint, Section 1: NDB Concepts and Architecture
