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Performance Management
The Unisphere performance management application monitors and manages storage system performance data (Dashboards, Charts, Analyze, Heatmap, Reports, Plan, Real-Time traces, and Performance Database management).
Performance Management Metrics
Unisphere supports the display of performance metrics (listed in the online help) that you can use to monitor and manage your network.
Host IO Limit by SG metrics
Unisphere collects and displays metrics for host I/O limits (by SG).

Host IO Limit by SG metrics

Unisphere collects and displays metrics for host I/O limits (by SG).

Within the PM metrics section, V4 is used to denote that the metric is supported only by a storage system (array) running PowerMaxOS 10 (6079). V3 is used to denote that the metric is supported only by a storage system (array) running HYPERMAX OS 5977 or PowerMaxOS 5978. Metrics without the denotation are supported by all storage systems (arrays).

The following table lists all metrics that are available for host I/O limits (by SG).

Table 1. Host IO limit (by SG) metrics
Metric	Description
Host IO Limit % Time Exceeded	Host I/O limit percentage time exceeded
Host IO Limit Exceeded	Host I/O limit exceeded
Host IO Limit IOs/sec	The number of I/Os that the FE port processes on behalf of the specific SG
Host IO Limit Throughput	Host I/O limit exceeded

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