Most Active Managed Disks report
Shows a chart of the 20 managed disks that are most active, and details for all managed disks, for a time period that you specify. Use the report to analyze the performance of managed disks.
Restriction: This report applies only to SAN Volume Controller, Storwize®,
and Hitachi Universal Storage Platform V systems.
Charts
The bar chart shows the most active
managed disks that are on storage systems. By default, managed disks
are sorted by the I/O rate.
Tip: To change the sort order,
select a value from the Sort Order list.
Report output
The information that is provided about the most active managed disks is as follows:
- 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.
- Storage MDisk Name
- The name that was assigned to the managed disk when it was added to the system.
- Storage System Configuration
- Shows whether a storage system is configured as back-end storage
or configured to virtualize back-end storage. If this value is
Storage System, the storage system is configured as back-end storage. If this value isStorage Virtualizer, the storage system is configured to virtualize back-end storage. - 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.
- 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.
- Total Back-End Data Rate (MiB/s)
- The average rate at which data is transmitted between the back-end storage resources and the component. The rate is measured in MiB per second and includes both read and write operations.
Related reports
To open other reports that are related to a resource in this report, click the name of the resource. You can open the following related reports for the resources in this report:
| Resource | Related reports |
|---|---|
| Storage system | Performance of One Storage System |
| Storage pool | Performance of One Pool |
| Managed disk | Performance of One Managed Disk, Storage Resource Relationships Summary |