Netra SPARC T4-2 Server
 
SPARC T4-2
 

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In this Document

Goal

Solution

Applies to:

Goal

How to Remove and Replace a SPARC T4-2 / Netra T4-2 Memory Risers and DIMM

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To report errors or request improvements on this procedure, please add a comment on Doc ID: 1415583.1
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Solution

DISPATCH INSTRUCTIONS

WHAT SKILLS ARE REQUIRED
No special skills required, Customer Replaceable Unit (CRU) procedure

Time Estimate: 60 minutes

Task Complexity: 0

REMOVAL/REPLACEMENT INSTRUCTIONS

PROBLEM OVERVIEW: Memory Risers and DIMMs replacing.

WHAT STATE SHOULD THE SYSTEM BE IN TO BE READY TO PERFORM THE RESOLUTION ACTIVITY? :
The customer should conduct an orderly software system shutdown. Then power down system and disconnect the power cords. A data backup is not a pre-requisite but is a wise precaution.

WHAT ACTIONS ARE REQUIRED:

CPU, Memory Riser, and DIMM Physical Layout
The name of each DIMM is based on the name of the memory riser and the DIMM slot location on the memory riser. The following is an example of the full FRU name for a single DIMM:

/SYS/MB/CMP1/MR0/BOB0/CH0/D0

The memory riser slots are labeled as

/MRx/BOB1/CH1/D0 <--- D4, J107
/MRx/BOB1/CH1/D1 <--- D5, J106
/MRx/BOB1/CH0/D0 <--- D6, J105
/MRx/BOB1/CH0/D1 <--- D7, J104

/MRx/BOB0/CH0/D1 <--- D3, J100
/MRx/BOB0/CH0/D0 <--- D2, J101
/MRx/BOB0/CH1/D1 <--- D1, J102
/MRx/BOB0/CH1/D0 <--- D0, J103

Each memory riser slot in the server chassis must be filled with either a memory riser or filler panel, and each memory riser must be filled with DIMMs and/or DIMM filler panels. For example, empty CPU sockets (P1 and P3) must have associated memory riser slots populated with two riser filler panels per CPU.

A) Locate and Remove a Memory Riser and DIMM.

Caution - These procedures require that you handle components that are sensitive to ESD. This sensitivity can cause the component to fail. To avoid damage, ensure that you follow antistatic practices as described in ESD Measures.

1. Prepare for servicing:
a. Attach an antistatic wrist strap.
b. Power off the server and unplug power cords from the power supplies.
c. Extend the server to the maintenance position.
d. Remove the top cover.
2. Identify the memory riser with the faulty DIMM by pressing the Fault Remind button located on the air divider.
- If the memory riser Service Action Required LED is off, all DIMMs on this riser are operating properly.
- If the memory riser Service Action Required LED is on (amber), one or more of the DIMMs installed on this riser is faulty or misconfigured
3. Lift the memory riser that has its Service Action Required LED lit straight up to remove the memory riser from the memory module socket.
4. Identify the faulty or misconfigured DIMM(s) by pressing the Remind button on the memory riser.
5. On DIMMs that display an amber Fault LED, remove the DIMMs.
a. Press down both DIMM slot ejector tabs as far as they will go.
b. Carefully lift the DIMM straight up.

Caution - Whenever you remove a memory riser or DIMM, you should replace it with another memory riser or a DIMM or a filler panel; otherwise, the server might overheat due to improper airflow.

B) Install a DIMM and a Memory Riser

1. Attach an antistatic wrist wrap and unpack the DIMMs and place them on an antistatic mat.
2. Install the DIMMs into the memory riser by performing the following tasks.
a. Ensure that the ejector levers at both ends of the memory module slot are in a fully open position.
b. Align each DIMM with the empty connector slot, aligning the notch in the DIMM with the key in the connector.
The notch ensures that the DIMM is oriented correctly.
c. Gently press the DIMM into the slot until the ejector tabs lock the DIMM in place.
Repeat these steps until each DIMM has been installed.
3. Push the memory riser module into the associated CPU memory riser slot until the riser module locks in place.
4. Return the server to operation:
a. Install the top cover.
b. Return the server to the normal rack position.
c. Reinstall the power cords to the power supplies and power on the server.
5. The following link to the T4-2 Service Guide, can be used as a guideline for verifying Replacement DIMMs: http://docs.oracle.com/cd/E23075_01/html/E23076/z40012f81428990.html#scrolltoc

OBTAIN CUSTOMER ACCEPTANCE

WHAT ACTIONS ARE REQUIRED 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:
SPARC T4-2 refer to: https://support.oracle.com/handbook_private/Systems/SPARC_T4_2/components.html#Memory
Netra SPARC T4-2: https://support.oracle.com/handbook_private/Systems/Netra_T4_2/components.html#Memory

REFERENCE INFORMATION:
SPARC T4-2 Service Manual: http://docs.oracle.com/cd/E23075_01/index.html

Netra SPARC T4-2 Service Manual: http://docs.oracle.com/cd/E21893_01/index.html

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