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In this Document

Goal

Solution

References

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

Applies to:

Goal

The purpose of this document is to outline the steps required to replace a Slammer Motherboard Tray using Guided Maintenance on a Pillar Axiom Storage System

Solution

DISPATCH INSTRUCTIONS
WHAT SKILLS DOES THE FIELD ENGINEER/ADMINISTRATOR NEED: An understanding of Guided Maintenance in R4 and R5.
TIME ESTIMATE: 60 minutes
TASK COMPLEXITY: 1
FIELD ENGINEER/ADMINISTRATOR INSTRUCTIONS: Log onto the Axiom GUI/Client to access Guided Maintenance.

PROBLEM OVERVIEW:
   WHAT STATE SHOULD THE SYSTEM BE IN TO BE READY TO PERFORM THE RESOLUTION ACTIVITY?: The FRU can be Failed/Warning status.
   WHAT ACTION DOES THE FIELD ENGINEER/ADMINISTRATOR NEED TO TAKE:

NOTE: Please refer to <Document 1535352.1> "Pillar Axiom: How to Disable Call Home to Prevent Automatic Service Request ASR Generation" before proceeding with the procedure below. The steps contained therein are provided to allow an Administrator to de-activate a particular ASR enabled array while performing maintenance or troubleshooting. This will prevent any additional Service Requests from being created unnecessarily.

NOTE:  The ASR function on an Axiom uses the Axiom "callhome" function to generate service requests.   If Callhome is disabled, the Axiom will not call home and no ASR can be generated.   Callhome can be temporarily disabled by an "administrator" account on the Network settings menu.   If Callhome is disabled, be sure to enable it when the maintenance activity is complete and the Axiom has been returned to normal status.

Read reference docs before proceeding:

If the FRU is in a Disable state shown in the GUI, before replacing the part please clear the failure history by following the instructions in Document 1952081.1 - Pillar Axiom: How to run ClearFailureHist in R4 and R5

Pillar Axiom: How to use Guided Maintenance in R4 and How to identify a FRU
Pillar Axiom: How to use Guided Maintenance in R5 and How to identify a FRU

OBTAIN CUSTOMER ACCEPTANCE
WHAT ACTION DOES THE FIELD ENGINEER/ADMINISTRATOR NEED TO TAKE TO RETURN THE SYSTEM TO AN OPERATIONAL STATE: Complete guided maintenance.
PARTS NOTE: Please make sure the part number on the replacement board matches the part number (or a valid substitution) of the original board installed in the Axiom. Please do a visual inspection that the new part looks like the old one. Also note any add-in PCI cards. Return the parts if requested by Support/Engineering via the CPAS system. Otherwise dispose of replaced parts as normal.

REFERENCE INFORMATION:
See below

Motherboard replacement in a Slammer affects the normal operation of a Pillar Axiom system. To allow the replacement of the motherboard tray in a target control unit (CU), the system induces fail over for the target CU to its partner CU.  This will disable caching for every resource on both CUs of the Slammer, which will reduce performance since all writes go to physical disk.   This also moves all LUNs or File Systems to the remaining CU on that Slammer. 

Please make sure to read this entire procedure in advance before attempting to replace the part, so you are familiar with the Slammer Motherboard Tray replacement. A Phillips head screw driver is required to remove the motherboard tray ejector, fans, and battery.
When handling the Motherboard and its FRUs please be ESD aware and ground yourself with a wrist strap.

Prepare the System

If you are replacing a Slammer Motherboard that is NOT already offline, failure to use Guided Maintenance may result in data loss.  Oracle always recommends using Guided Maintenance to replace any parts in an Axiom system.

Remove Motherboard Tray
    Disconnect the power cables from both power supplies of the target Slammer Control Unit (CU).
    Remove the bezel from the front of the Slammer chassis.
    Remove the 2 fan modules by taking out the 4 screws that secure them to the slammer tray.    
    Remove the battery from the slammer chassis and set it aside.
    Loosen and disengage the two screws that secure the motherboard tray ejectors to the target Slammer chassis.
    Press both ejectors down firmly to disengage the motherboard tray from the chassis midplane.
    Slide the motherboard tray out of the chassis and set it aside.

Insert a Slammer Motherboard Tray
Important! When you replace this FRU, slowly and evenly slide the replacement into place.  If the FRU has ejectors or locking tabs, use them for final connector seating.

    Slide the motherboard tray into the Slammer chassis and push it firmly into place to engage the tray with the chassis midplane.
    Lift both ejectors up and press firmly to engage the motherboard tray with the chassis midplane.
    Engage and tighten the two screws that lock the ejectors to the chassis.
    Follow the appropriate procedure to reinsert the fans into the motherboard tray and secure the screws tightly.
     a. Slide the both fan modules into the Slammer chassis and push it into place firmly to engage the fan FRU with the motherboard tray.
     ***Note: The system will automatically spin up the fan.
     b. Tighten the 4 screws to secure the fan to the chassis.
    Follow the appropriate procedure to reinsert the battery into the motherboard tray and secure the screws tightly.
     a. Slide the battery into the Slammer chassis.
     b. Push the battery firmly into place to engage the battery with the motherboard assembly.
     c. Tighten the 2 screws to secure the battery to the Slammer chassis.
    When prompted by Guided Maintenance, attach both power cords to both of the target CU power supplies.

    ***Important! After the target CU powers up, the system may need to update the firmware on the replacement motherboard.  To allow this update to occur, wait for 10 minutes before continuing with the next step.

    ***Caution: Clicking Next prematurely may result in having to recover the system manually or replace the motherboard.
    
    If Guided Maintenance displays a verification failed message, click Try Again and re-seat the FRU.  If the second attempt is not successful, contact Support to continue Guided Maintenance for the FRU.

    Note:  The length of time for the verification step to complete and the system to return a Normal status depends on the I/O load being carried by the system.  For that reason, Pillar recommends that you lighten the I/O load as much as possible before replacing the FRU.
    If prompted, to fail back the control unit (CU), click Recover Control Unit.

    Note:  If the Enable Fail back of NAS Control Units option is set as part of the global settings, Recover Control Unit is not displayed.

    Result:
    In any case, the CU fails back (recovers) from its partner.
    On a NAS Slammer, look for an Administrator Action.
    You may be instructed to restart the system, which makes this FRU and all other resources on the target Slammer CU available.

    Note: On a SAN Slammer, the system automatically attempts to recover.
    Click Finish.
    Review the status of the replacement FRU to confirm that it has a Normal status.
    Follow the appropriate procedure to reattach the bezel to the Slammer chassis.
   
    Note:  Be sure the power connectors are well seated.  If the power and signal connector is not properly seated, the bezel fault LED will be lit.

OBTAIN CUSTOMER ACCEPTANCE
WHAT ACTION DOES THE FIELD ENGINEER/ADMINISTRATOR NEED TO TAKE TO RETURN THE SYSTEM TO AN OPERATIONAL STATE:

1. Complete guided maintenance.

2. If applies, reactivate ASR.

PARTS NOTE: Return the parts if requested by Support/Engineering via the CPAS system. Otherwise dispose of replaced parts as normal.

REFERENCE INFORMATION:
See below

References

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