After the storage system is installed and connected and the device files have been created, the AIX® system sets the device parameters to the system default values. If necessary, you can change the read/write time-out, queue type, and queue depth parameters for each new device using the System Management Information Tool (SMIT) or the AIX® command line (see Changing device parameters from the AIX® command line).
The following table specifies the read/write time-out and queue type requirements for the devices.
Parameter Name | Default Value | Requirement |
---|---|---|
Read/write time-out | 30 | 60 |
Queue type | none | simple |
The following table lists the recommended queue depth values for the devices. You can adjust the queue depth as needed to optimize the I/O performance of the devices. For details, see Host queue depth.
Storage system | Recommended queue depth settings |
---|---|
VSP 5000 series | Target ports:
Bidirectional ports:
|
VSP G1x00, VSP F1500 |
|
VSP |
|
VSP E series | Target ports:
Universal ports:
|
VSP G130, G/F350, G/F370, G/F700, G/F900 | Target ports:
Universal ports:
|
VSP G200, G400, G600, G800, VSP F400, F600, F800 |
|
HUS VM |
|