| Measurement |
Description |
Measurement Unit |
Interpretation |
| Total_IO |
Indicates the number of IO operations that occurred on this controller during the last measurement period. |
Number |
Comparing the value of this measure across controller s can reveal whether any controller is overloaded. If so, this revelation could turn the spotlight on imbalances in load distribution across the controllers. |
| Prct_read |
Indicates the percent of read operations that occurred on this controller. |
Percent |
|
| Prct_write |
Indicates the percentage of write operations that occurred on this controller. |
Percent |
|
| Cache_hit_prct |
Indicates the percentage of requests to this controller that were served from the cache. |
Percent |
A high value is ideally desired for this measure. A low value could imply that most of the data requested is not in the cache, which in turn could result in a high degree of direct disk accesses. |
| Trans_rate |
Indicates the rate of transactions to this controller. |
KB/Sec |
|
| Current_IOPS |
Indicates the rate of I/O operations to this controller. |
IO/Sec |
|