Memory Usage Graph differences in Aria Operations (formerly vROPs) and vCenter
Article ID: 400911
Updated On: 06-20-2025
Products
Issue/Introduction
Users may notice that memory usage graphs displayed in Aria Operations (formerly vROPs) and vCenter do not match, regarding resource consumption and utilization.
Environment
VMware vCenter Server 8.0.x
Aria vRealize Operations
Cause
Memory charts in Aria Operations and vCenter may show different values due to differences in how they measure and report memory usage:
Different Measurement Methods: Aria Operations considers overhead, host-level memory management, and overall memory utilization, which might not be directly reflected in vCenter’s VM-specific view.
Aria Operations focus on Performance: Aria Operations emphasizes overall environment performance, often reporting memory usage in terms of "active" or "consumed" memory, which can differ from the "guest" memory shown in vCenter.
vCenter’s VM-Specific View: vCenter reports individual VM memory allocation, which may not account for broader host memory pressure or cluster-wide usage.
Reporting Variances: Different metrics and aggregation methods used by Aria Operations and vCenter can contribute to differences in reported memory usage.
Resolution
Since these differences are inherent to the way Aria Operations and vCenter analyze memory, the best approach is:
Understand the Context: Recognize that Aria Operations provides a high-level view focused on performance and capacity management, whereas vCenter offers a detailed, VM-specific perspective.
Compare Metrics Correctly: Ensure you are comparing similar memory metrics (e.g., "active" vs. "allocated") when analyzing differences .
Leverage Both Tools: Use Aria Operations for performance analysis and forecasting while relying on vCenter for precise VM-level memory details.
Consult Documentation: Refer to VMware’s official documentation for detailed explanations on memory metrics used in each tool.
Verify Configuration: If there are concerns about potential misconfigurations or anomalies, check logging and monitoring settings within both platforms.
There is no known issue regarding memory reporting mismatches in vCenter 8.0 2b; this behavior is expected based on how the platforms process and display memory usage data.
Additional Information
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