Replacing the systemboard/motherboard of a server which has hardware RAID enabled is a major activity. In this post we will discuss about the steps that you should follow.
Caution:- You should be extremely careful while doing this activity and take complete backup of all your data.
1) Collect the explorer and take full backup of all data specially OS.
2) Bring down the server.
3) Replace the motherboard and put back the old disks in server.
4) Change the setting from SP to factory default as many refurbished system board may have old LDOM config in them. It can be done as below:-
LDOM Resetting through the Service Processor.
-> set /HOST/bootmode config="factory-default" -> stop /SYS Are you sure you want to stop /SYS (y/n)? y
Wait for machine to power off.
We can then power on the system.
-> start /SYS Are you sure you want to start /SYS (y/n)? y Starting /SYS -> start /SP/console
5) Now upgrade the firmware so that it’s same as the firmware of old board. It can be done using sysfwdownload utility. Follow the readme of firmware patch for detailed instructions.
6) If you cannot see the disks in OS which are in hardware RAID it can be because the volume is inactive. It can be activated from ok prompt as follows:-
Go to the OBP prompt.
At the command line, set the auto-boot? and fcode-debug? variables to false and reset the system.
ok setenv auto-boot? false auto-boot? = false ok setenv fcode-debug? true fcode-debug? = true ok reset-all
Find the path to the controller.
ok show-disks a) /pci@0/pci@0/pci@2/LSILogic,sas@0/disk b) /pci@0/pci@0/pci@1/pci@0/usb@1,2/storage@1/disk q) NO SELECTION Enter Selection, q to quit: q ok
Note – You are looking for the path to the controller. It generally contains the phrase “LSILogic,sas@0” or the phrase “scsi@0“.
Select the controller.
ok select /pci@0/pci@0/pci@2/LSILogic,sas@0
Show the volumes, look for any inactive volumes.
Activate the inactive volumes. Repeat the command to activate all inactive volumes. For example, to activate volume number 1 type:
ok 1 activate-volume
Note – There might be more than two inactive RAID volumes, but you cannot activate more than two.
Deselect the controller.
Set the auto-boot? and fcode-debug? variables to true and reset the system.
ok setenv auto-boot? true auto-boot? = true ok setenv fcode-debug? true fcode-debug? = true ok reset-all
7) Once the volume is enabled you should be able to see the LSI disk in probe-scsi-all and also in format once the server is booted.
Note:- This post is created just for your reference. Please try it first in your test server. We are not responsible for any loss caused by following this tutorial.