SPARC T8-2
 

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In this Document

Goal

Solution

References

Oracle Confidential PARTNER - Available to partners (SUN).
Reason: Product released

Applies to:

Goal

How to Replace SPARC T8-2 Disk Backplane

Solution

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To report errors or request improvements on this procedure, please add a comment on Doc ID: 2291674.1
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DISPATCH INSTRUCTIONS

WHAT SKILLS ARE REQUIRED?: SPARC T8-2 Product Training required, to be serviced by qualified Oracle Service personnel, requires the ability to follow steps similar to what is in the Product Service manual.

Time Estimate: 60 minutes

TASK COMPLEXITY: 1

REMOVAL/REPLACEMENT INSTRUCTIONS:

PROBLEM OVERVIEW: SPARC T8-2 Disk Backplane Replacement


WHAT STATE SHOULD THE SYSTEM BE IN TO BE READY TO PERFORM THE RESOLUTION ACTIVITY? :

WHAT ACTIONS ARE REQUIRED?:

Verify/Update TLI Prior to Replacement

1. Log into the ILOM and check the fruid container values and sync them if needed. 

    a. To avoid mismatched fruid values causing a failure after a disk backplane (DBP) replacement the fruid data should be confirmed to have matching data in at least the Backup1 (SPM) and Backup2 (MB) containers so that the DBP will have it's container updated automatically after replacement. Go into restricted mode and use the showpsnc command to check this.

    b. The above example shows a system with all three containers properly in sync. If the output from the system does not show all of the containers with matching values then you should reset the SP and then re-check the values again. An ILOM reset will attempt to auto-populate the matching values if one container is out of sync. 

    c. After an ILOM reset if the Backup1 and Backup2 containers match then proceed with the following steps to replace the DBP. If these two containers do not match then DO NOT proceed with the replacement yet.

    d. If the containers do not match you will need to use the copypsnc command from service or escalation mode to copy the data from the good container so that the Backup1 and Backup2 containers match (Primary is the DBP and we are about to replace this so it is not as important at this step). 

If you are unfamiliar with this process and require assistance please reference the steps for using copypsnc to fix the serial number detailed in the "How to update product serial number on systems which implement TLI functionality (Doc ID 1280913.1)" and contact the TSC if needed. How to access service mode and escalation mode on ILOM 3.x and later platforms (Doc ID 1019946.1).

    e. After the fruid data in the Backup1 and Backup2 containers have been confirmed to match proceed with the following steps.

2. Prepare the server for service.

    a. Power off the server and disconnect the power cords from the power supplies.
    b. Extend the server to the maintenance position in the rack.
    c. Attach an anti-static wrist strap.
 

Replace the Disk Backplane

1. Remove the server from the rack.

2. Remove the top cover.

3. Pull each storage disk out far enough to disengage it from the disk backplane.

4. Remove one or more memory risers to have easier access to components in the drive area.

5. Remove the System Remind button assembly (air divider) by lifting it up and away from the power supplies.

6. Unplug the two SAS cables, power cables, ribbon cable, and four NVMe drive cables (if installed) from the drive backplane.

7. Push up on the wire tab in the upper/inner corner of the drive backplane.

8. Swing the drive backplane back and out of the chassis.

Install the Hard Drive Backplane

1. Insert the drive backplane into the chassis.

    Angle the bottom of the backplane into position first, then move the backplane forward to align the side hooks, then press the backplane into position.

    Verify that the drive backplane is seated properly at the bottom, in the small slot.

2. Lift up the metal hook and press the drive backplane to the front until it snaps into place.

3. Replace the power cable, ribbon data cable, SAS cables, and four NVMe cables to their original locations.

4. Replace the System Remind button assembly (air divider).

5. Replace all memory risers previously removed.

6. Install the top cover.

7. Put the server into the rack.

8. Install the hard drives in the same locations as they occupied before the replacement.

9. Return the Server to operation.

    a. Remove any anti-static measures that were used.
    b. Return the server to it's normal operating position within the rack.
    c. Re-install the AC power cords and any data cables that were removed.
    d. Power on server. Verify that the Power/OK indicator led lights steady on.

Verify/Update TLI After Replacement

1. Set the system serial number/fruid data if needed.

    a. The disk backplane is the primary fruid container in this server so when it is replaced you will normally need to fix the serial number information.
    b. login to the ILOM as root and then enter the "restricted shell" to check the fruid values. Follow the example below to enter restricted shell and use the showpsnc command:

    c. When the disk backplane is replaced the Primary fruid container will likely not match the Backup entries. If it does not you must enter escalation or service mode to fix it (if all three entries match this step is done).
    d. Contact the TSC to request an escalation password (service mode will work also if just the copypsnc command ends up needing to be used, if the setpsnc command is needed escalation mode is required. setpsnc is not covered in this procedure).
    e. Provide your TSC contact the output from the following ILOM commands- "version", "show /SYS product_serial_number", and "show /SP/clock". If the product_serial_number information does not give good output then provide the showpsnc output that was seen in step b above as well.
    f. The TSC will provide an escalation password that is made up of 32 short words. Follow the example below to create a new user with the 'Service' role assigned. The Service role is required to access service or escalation modes. In the following example we will create a user named 'escuser' with the service role.

    g. Set the check_physical_presence to false and then exit from the ILOM so that you can login as the newly created user.

    h. Login using the escuser login and enter escalation mode using the password that was provided by the TSC.

    i. Use the showpsnc command to confirm the current container values. Confirm that one of the backup containers has a serial number (the value on the PSN line) that matches the system serial number. The system serial number can be checked by comparing to the serial number RFID tag on the front left hand side of the server. After confirming that there is a valid fruid backup use the copypsnc command to write the good data from the backup to the primary container on the DBP. The following example shows copying from backup1 to the primary but you could also copy from backup2 if needed.

    j. At this point if all of the fruid containers match and have the correct serial number data this step is done. If more than one of the fruid containers had non-valid entries then the copypsnc command should be used to copy over the valid data to the other container that is not valid. (ie. "copypsnc Backup1 Backup2" to copy backup1 to backup2) After confirming all fruid data is correct reset the ILOM to confirm that the fruid data persists through a reboot and remove the escalation user if needed.

    k. If trouble is encountered during any of the steps of accessing escalation mode and fixing the fruid containers please contact the TSC for assistance.

How to verify the Disk Backplane is working properly

1. Log into ILOM to confirm if disk backplane status is working properly.

Sample:

2. Check ILOM event log to see if any error related to the disk backplane.

OBTAIN CUSTOMER ACCEPTANCE

WHAT ACTION DOES THE FE/CUSTOMER NEED TO TAKE TO RETURN THE SYSTEM TO AN OPERATIONAL STATE:
Boot system and monitor boot sequence for errors. Test functionality of system:
1. Run the Solaris "fmadm faulty" and SP/ILOM "show faulty" command (if only ALOM is supported run "showfaults -v" command) to verify that the fault has been cleared.
2. Perform one of the following tasks based on your verification results:
   * If the previous steps did not clear the fault, refer to doc 1004229.1 for information about the tools and methods you can use to diagnose and clear
     component faults.
   * If the previous steps indicate that no faults have been detected, the component has been replaced successfully. No further action is required
3. Restart software applications per applicable administration guides to resume system operation.

PARTS NOTE: 
https://support.oracle.com/handbook_partner/Systems/SPARC_T8_2/components.html#Chassis

REFERENCE INFORMATION: 
SPARC T8-2 Service Manual: https://docs.oracle.com/cd/E79179_01/html/E80511/index.html

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