Performance of One Pool report

Shows four charts, and a table of performance metrics for a storage pool over a time period that you specify. Use the report to analyze the performance of a storage pool.

Charts

The charts show the following performance metrics for a pool on a storage system:
  • The total overall rates for I/O operations, and the total response times
  • The overall I/O rates for read and write operations, and the response times for read and write operations
  • The total I/O rates for back-end operations, and overall response times for back-end operations
  • The I/O rates for back-end read operations and back-end write operations, and the response rates for back-end read and back-end write operations

Report output

The following information is provided in the report for the period that you specified:
Storage System Name
A user-defined name of the storage system. If a name was not defined, IBM Spectrum® Control shows the name that was defined when the storage system was added for monitoring.
Storage Pool Name
The name that was assigned to the pool when it was added to the system.
Overall Read I/O Rate (ops/s)
The average number of read operations per second. This value includes both sequential and nonsequential read operations.
Overall Write I/O Rate (ops/s)
The average number of write operations per second. This value includes both sequential and nonsequential 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.
Read Response Time (ms/op)
The average number of milliseconds to complete a read operation.
Write Response Time (ms/op)
The average number of milliseconds to complete a write operation.
Overall Response Time (ms/op)
The average number of milliseconds to complete an I/O operation. This value includes both read and write operations.
Back-End Read I/O Rate (ops/s)
The average number of read operations per second that are issued to the back-end storage resources.
Back-End Write I/O Rate (ops/s)
The average number of write operations per second that are issued to the back-end storage resources.
Total Back-End I/O Rate (ops/s)
The average number of I/O operations per second that are transmitted between the back-end storage resources and the component. This value includes both read and write operations.
Back-End Read Response Time (ms/op)
The average number of milliseconds for the back-end storage resources to respond to a read operation.
Back-End Write Response Time (ms/op)
The average number of milliseconds for the back-end storage resources to respond to a write operation.
Overall Back-End Response Time (ms/op)
The average number of milliseconds for the back-end storage resources to respond to a read or a write operation.

Related reports

To open related reports, click the name of the storage system and then click the name of the report. You can open the following related reports:

  • Performance of One Storage System
  • Most Active Pools