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# Initiator metrics

Unisphere collects and displays metrics for initiators.

The following table lists all metrics that are available for initiators.

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).

Table 1. Initiator metrics
Metrics | Description
--- | ---
Bandwidth Limit Exceeded Secs | Sum of the number of seconds that the dir:port:initiator combination was running with maximum quotas
Host IOs/sec | A host command for data transfer
Host Reads/sec | The number of host read operations performed each second by the initiator
Host Throughput | A cumulative number of host MBs read/writes per second
Host Throughput Read | A cumulative number of host MBs read per second
Host Throughput Written | A cumulative number of host MBs written per second
Host Writes/sec | The number of host write operations performed each second by the initiator
Read RT | The average time that it took the system to serve one read I/O for this initiator.
Response Time | The average response time for the reads and writes
Syscall Count/sec | The total number of calls seen by this initiator
Write RT | The average time that it took the system to serve one write I/O for this initiator