Netra CT900: How to setup up a CP3260 to boot from an external storage array

Asset ID:	1-71-1129605.1
Update Date:	2010-06-25
Keywords:

Solution Type Technical Instruction Sure

Solution 1129605.1 : Netra CT900: How to setup up a CP3260 to boot from an external storage array

Applies to:

Sun Netra CT900 Server - Version: Not Applicable and later [Release: NA and later ]
Sun Netra CP3260 ATCA Blade Server - Version: Not Applicable and later [Release: NA and later]
Information in this document applies to any platform.

Goal

This documents describes how to setup the Netra CP3260 blade to boot from an external disk array.

Symptoms

Netra CP3260 connects to external storage array via FC-ARTM
The blade is to boot from the external storage array

Solution

Should a customers connect the CP3260 to external storage (via FC-ARTM to a SAN or NAS)
instead of using the HDD-ARTM, there is no other internal HDD.

It is necessary to boot from the external storage array. This documents describes how to setup the Netra CP3260 blade to boot from an external disk array.

Other blades (CP3060, CP3220, CP3250, CP3270) could follow a similar procedure.

These steps shows how to set up CP3260 to boot from external storage array. These commands are run in OBP at the ok prompt

Step 1 - ok " /pci@0/pci@0/pci@8/pci@0/pci@b/lpfc@0" select-dev
(get the exact lpfc device node from show-devs)

Step 2 - ok set-sfs-boot

Step 3 - ok wwpn 203400a0b83480d6 0 set-boot-id
(get the actual wwpn number from 'probe-scsi-all')

Step 4 - ok unselect-dev

Step 5 - ok reset-all

Step 6 - ok show-devs
(verify that path with emlx disk is present now)

Repeat steps 1-6 for the other device path

Next, check 'show-devs' output and make sure paths are now listed as the emlx
devices and the lpfc devices are gone

Lastly, install the OS now that the paths are correct (any previous OSinstall will have device link problems when you try to boot due to the changes)

After OS install, setup both boot paths.

If done correctly, the devices will look something like:

/pci@0/pci@0/pci@8/pci@0/pci@b/emlx@0/fp@0,0/sd@w203400a0b83480d6,0:a

Note in the above the emlx node name rather than lpfc and the WWN rather than the device number.

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normalized, ATCA, Netra, CT900, CP3260, boot, external, storage

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