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2. If the disk array LUNs are defined after the IBM system is powered on, issue a cfgmgr

command to recognize the new devices.

3. Use the lsdev command to display system device data and verify that the system recognizes

the newly installed devices.

The devices are listed by device file name. All new devices should be listed as Available. If

they are listed as Define, you must perform additional configuration steps before they can be

used.

The following example shows that the device hdisk0 is installed on bus 60 and has TID=5

and LUN=0:

#lsdev -Cc disk

hdisk0 Available 10-60-00-5, 0 16 Bit SCSI Disk Drive

hdisk1 Available 10-60-00-6, 0 16 Bit SCSI Disk Drive

4. Record the device file names for the new devices. You will use this information when you

change the device parameters. For information about changing the device parameters, see

“Changing the device parameters” (page 85).

5. Use the lscfg command to identify the AIX disk device's corresponding array LDEV

designation.

For example, enter the following command to display the emulation type, LDEV number, CU

number and array port designation for disk device hdisk3.

# lscfg –vl hdisk3

Configuring disk array devices

Disks in the disk array are configured using the same procedure for configuring any new disk on

the host. This includes the following procedures:

• “Changing the device parameters” (page 85)

• “Assigning the new devices to volume groups” (page 87)

• “Creating the journaled file systems” (page 89)

• “Mounting and verifying the file systems” (page 91)

Creating scripts to configure all devices at once can save you considerable time.

Changing the device parameters

When the device files are created, the system sets the device parameters to the system default

values. You might need to change a few of those values for each new OPEN-x device: For more

information, see Table 21 (page 85) and Table 22 (page 86).

• Read/write (R/W) timeout value

• Queue depth

• Queue type

Table 21 Device parameters-read/write timeout and queue type (IBM AIX)

Required ValueDefault ValueParameter

6030Read/write timeout

SimpleNoneQueue type

Configuring disk array devices 85

HP XP7 Configuration Guide

Other manuals for HP XP7