HP XP P9500 Disk Array Configuration Guide (AV400-96496, May 2014)

For example, enter the following command to change the queue depth for the device hdisk3:
# chdev –l hdisk3 –a queue_depth='2'
4. Verify that the parameters for all devices were successfully changed.
For example, enter the following command to verify the parameter change for the device
hdisk3:
# lsattr –E –l hdisk3
5. Repeat these steps for each OPEN-x device on the disk array.
TIP: The lsattr command also shows useful information, such as LUN ID of the mapped
LDEV, worldwide name of the disk array FC port, and N-Port ID.
Another useful command for determining the slot position and port worldwide name of the
FCA is the lscfg –v –l hdiskx command.
Changing the device parameters using SMIT
1. Start SMIT. (Optional) For an ASCII session, use the smit –C command.
2. Select Devices.
Example
System Management
Move cursor to desired item and press Enter.
Software Installation and Maintenance
Software License Management
Devices
System Storage Management (Physical & Logical Storage)
Security & Users
Communications Applications and Services
Print Spooling
Problem Determination
Performance & Resource Scheduling
System Environments
Processes & Subsystems
Applications
Using SMIT (information only)
3. Select Fixed Disk.
4. Select Change/Show Characteristics of a Disk.
5. Select the desired device from the Disk menu.
The Change/Show Characteristics of a Disk screen for that device is displayed.
6. Enter the correct values for the read/write timeout value, queue depth, and queue type
parameters. Press Enter to complete the parameter changes.
Example
Change/Show Characteristics of a Disk
Type or select values in entry fields.
Press Enter AFTER making all desired changes.
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Status
Location
Parent adapter
Connection address
Physical volume IDENTIFIER
ASSIGN physical volume identifier no
Queue DEPTH [2]
Queuing TYPE [simple]
90 IBM AIX