Most Active Servers report

Shows a chart of the 20 servers that have the most active volumes. The most active volumes have the greatest aggregate load.

Charts

The bar chart shows the most active servers. By default, servers are sorted by the total I/O rate.

Tip: To change the sort order, select a value from the Sort Order list.

The information that is provided about the most active storage systems is as follows:

Server Name: The fully qualified domain name of the server. For example, the name of a server might be server.example.com.
Overall Response Time (ms/op): The average number of milliseconds to complete an I/O operation. This value includes both read and write operations.
Total Overall I/O Rate (ops/s): The average number of read operations and write operations per second. This value includes both sequential and nonsequential operations.
Total Data Rate (MiB/s): The average number of MiB per second that are transferred for read operations and write operations.
Overall Read Cache Hit Percentage: The percentage of all read operations that find data in the cache. This value includes both sequential and random read operations, and read operations in the volume cache and volume copy cache where applicable.; You can use this value to understand throughput or response times. Low cache-hit percentages can increase response times because in the event of a cache miss, the data must be read from the back-end storage resources.
Volume Utilization: The average percentage of time that the volume is busy.

To open the Summarized Performance of Volumes by Server report, click the name of the server in the report table.