HP XP P9500 HP StorageWorks P9000 Configuration Guide (AV400-96380, May 2011) - Page 92
Changing the device parameters using SMIT, Devices, Fixed Disk, Change/Show Characteristics of a Disk
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2. To change the queue depth parameter, enter: chdev -l hdiskx -a queue_depth='x' where x is a value from the previous table. 3. To change the queue type parameter, enter: chdev -l hdiskx -a q_type='simple' 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. [MORE...4] 92 IBM AIX
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