The following table lists the I/O types and whether performance information can be collected by RAID Agent when a program for managing storage systems is used.
Program name |
I/O Type |
Types of performance information |
Can/cannot collect performance information of each resource subject to I/O loads |
||
---|---|---|---|---|---|
Logical device |
Parity group |
Port |
|||
TrueCopy or Universal Replicator |
I/O that occurs between a host and a P-VOL |
Performance values of read/write processing |
Y |
Y |
Y |
Usage rate |
Y |
Y |
(Not applicable) |
||
I/O that occurs between a P-VOL and an S-VOL |
Performance values of read/write processing |
N |
N |
Initiator port : Y RCU Target port : N |
|
Usage rate |
Y* |
Y* |
(Not applicable) |
||
ShadowImage |
I/O that occurs between a host and a P-VOL |
Performance values of read/write processing |
Y |
Y |
Y |
Usage rate |
Y |
Y |
(Not applicable) |
||
I/O that occurs between a P-VOL and an S-VOL |
Performance values of read/write processing |
N |
N |
(Not applicable) |
|
Usage rate |
Y* |
Y* |
(Not applicable) |
||
Copy-on-Write Snapshot/Thin Image/Thin Image Advanced |
I/O that occurs between a host and a P-VOL |
Performance values of read/write processing |
Y |
Y |
Y |
Usage rate |
Y |
Y |
(Not applicable) |
||
I/O that occurs between a P-VOL and a V-VOL |
Performance values of read/write processing |
N |
N |
(Not applicable) |
|
Usage rate |
N |
N |
(Not applicable) |
||
I/O that occurs at a pool volume |
Performance values of read/write processing |
N |
N |
(Not applicable) |
|
Usage rate |
Y* |
Y* |
(Not applicable) |
||
Dynamic Provisioning |
I/O that occurs between a host and a V-VOL |
Performance values of read/write processing |
Y |
N |
Y |
Usage rate |
N |
N |
(Not applicable) |
||
I/O that occurs at a pool volume |
Performance values of read/write processing |
N |
N |
(Not applicable) |
|
Usage rate |
Y* |
Y* |
(Not applicable) |
||
Legend: Y: Can be collected N: Cannot be collected (the value will be indefinite) |
|||||
* When monitoring a logical device that is not mapped to a port or when monitoring a parity group to which the logical device belongs, the value of Unassigned Open Volume Monitoring must be Y or y. |