Drive Group metrics provide statistics about the disk subsystem, which consists of a set of drives and a controller that operate as a single logical drive. User interface (UI) statistics are visible to users.
| Category | Description |
|---|---|
| Read Second | The number of read commands that are performed per second for all QoS levels, averaged across the duration interval. The duration interval is the amount of time between statistics collection, which is 120 seconds (two minutes). |
| Read MB Second | The number of megabytes read per second across all QoS levels. A megabyte is defined as 220(1,048,576 bytes). |
| Read Millisecond | The time to complete the read commands, which is averaged across all QoS levels for the interval |
| Write Second | The number of write commands performed per second, which is averaged across all QoS levels for the interval |
| Write MB Second | The number of megabytes written per second across all QoS levels. A megabyte is defined as 220 (1,048,576 bytes). |
| Write Millisecond | The time to complete the write commands, which is averaged across all QoS levels for the interval |
| Read Queue | The number of outstanding read commands that are averaged across the interval |
| Write Queue | The number of outstanding write commands that are averaged across the interval |