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# DX Port metrics

Unisphere collects and displays metrics for DX ports.

DX Port metrics are supported only by storage systems (arrays) running HYPERMAX OS 5977 or PowerMaxOS 5978.

The following table lists all metrics that are available for DX ports.

Table 1. DX Port metrics
Metric | Description
--- | ---
% Busy | Percentage of time that the port is busy
Avg IO Size (KB) | Kbytes transferred per sec/total I/Os per second
Host lOs/sec | The number of host operations performed each second by the port
Host MBs/sec | The size of the data transfer from the host in MBs per second
MBs Read/sec | The read throughput (MBs) of the port per second
MBs Written/sec | The write throughput (MBs) of the port per second
Reads/sec | The number of read operations performed by the port per second
Speed | Speed
Writes/sec | The number of write operations performed each second by the port