Server Memory Module User Manual

1. Important Safety Information and Regulatory Notices

Please read this section carefully before handling or installing the memory module. The information in this User's Manual has been carefully reviewed and is believed to be accurate. The vendor assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the information in this manual, or to notify any person or organization of the updates.

End User Agreement

This product, including software and documentation, is the property of Supermicro and/or its licensors, and is supplied only under a license. Any use or reproduction of this product is not allowed, except as expressly permitted by the terms of said license.

IN NO EVENT WILL Super Micro Computer, Inc. BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. In particular, Super Micro Computer, Inc. shall not have liability for any hardware, software, or data stored or used with the product, including the costs of repairing, replacing, integrating, installing or recovering such hardware, software, or data.

Any disputes arising between manufacturer and customer shall be governed by the laws of Santa Clara County in the State of California, USA. The State of California, County of Santa Clara shall be the exclusive venue for the resolution of any such disputes. Supermicro's total liability for all claims will not exceed the price paid for the hardware product.

Regulatory Warnings

• Perchlorate Materials: This Perchlorate warning applies only to products containing CR (Manganese Dioxide) Lithium coin cells. "Perchlorate Material-special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate".
• Lead Solder Warning: Handling of lead solder materials used in this product may expose you to lead, a chemical known to the State of California to cause birth defects and other reproductive harm.

The products sold by Supermicro are not intended for and will not be used in life support systems, medical equipment, nuclear facilities or systems, aircraft, aircraft devices, aircraft/emergency communication devices or other critical systems whose failure to perform be reasonably expected to result in significant injury or loss of life or catastrophic property damage. Accordingly, Supermicro disclaims any and all liability, and should buyer use or sell such products for use in such ultra-hazardous applications, it does so entirely at its own risk.

2. Product Overview

This document provides instructions for the installation and use of Supermicro DDR4 LRDIMM 128GB server memory modules. These modules are designed for high-performance server environments, offering significant capacity and speed for demanding applications.

Figure 1: Server Memory Module (multiple angles)

3. Specifications

Key technical specifications for the memory modules:

Figure 2: Close-up of a Server Memory Module

4. Installation Guide

Follow these steps to properly install the DDR4 LRDIMM modules into your server system.

4.1. Pre-installation Checks

• Compatibility: Ensure your server motherboard and CPU support DDR4 LRDIMM memory modules of 128GB capacity and 2933Mhz speed. Refer to your server's motherboard manual for specific memory compatibility guidelines.
• Power Off: Completely power down your server and disconnect all power cables before opening the chassis.
• Static Protection: Wear an anti-static wrist strap or frequently touch a grounded metal object to discharge static electricity, which can damage sensitive electronic components.
• Locate DIMM Slots: Identify the DIMM slots on your motherboard. Consult your server's manual for the correct slot population order, especially when installing multiple modules.

4.2. Installation Steps

1. Gently open the retaining clips at both ends of the DIMM slot.
2. Align the memory module with the DIMM slot, ensuring the notch on the module matches the key in the slot. Do not force the module if it does not align.
3. Press down firmly and evenly on both ends of the memory module until the retaining clips snap into place, securing the module.
4. Repeat for any additional memory modules, following the recommended slot population order from your server's manual.

4.3. Post-installation Verification

• Close the server chassis and reconnect all power cables.
• Power on the server. During the boot process, the system BIOS/UEFI should detect the new memory.
• Access the system BIOS/UEFI setup or operating system to verify that the installed memory capacity and speed are correctly recognized.

Figure 3: Server motherboard with memory modules installed

5. Operation

Once installed and recognized by the system, the memory modules operate automatically. They provide the necessary RAM for your server's operating system and applications. No specific user interaction is required for their operation beyond ensuring proper installation and system compatibility.

6. Maintenance and Care

Memory modules generally require minimal maintenance. Follow these guidelines to ensure their longevity:

• Handling: Always handle memory modules by their edges to avoid touching the gold contacts or integrated circuits.
• Cleaning: If necessary, gently clean the gold contacts with a lint-free cloth and isopropyl alcohol. Do not use abrasive cleaners or solvents.
• Environment: Ensure your server operates in a clean, dust-free environment with adequate ventilation to prevent overheating.
• Storage: If storing modules, keep them in anti-static bags in a cool, dry place.

7. Troubleshooting

If you encounter issues after installing the memory modules, consider the following troubleshooting steps:

• System Not Booting/No Display:
  • Ensure modules are fully seated in their slots and retaining clips are closed.
  • Verify correct slot population order according to your server manual.
  • Test modules individually if you installed multiple, to identify a potentially faulty stick.
  • Check for bent pins on the DIMM slots or module contacts.
• Incorrect Memory Capacity Detected:
  • Confirm modules are fully seated.
  • Update your server's BIOS/UEFI to the latest version, as it may improve memory compatibility and detection.
  • Verify that your motherboard and CPU support the total installed memory capacity.
• System Instability/Crashes:
  • Run memory diagnostic tools (e.g., MemTest86) to check for errors.
  • Ensure proper cooling within the server chassis.
  • Check for any overclocking settings in BIOS/UEFI and revert to default if necessary.

8. User Tips

• Always consult your server's motherboard manual for the most accurate and detailed memory compatibility and installation instructions. Server memory configurations can be complex.
• When upgrading memory, it is often best practice to install modules in matched pairs or sets as recommended by your server manufacturer for optimal performance.

9. Frequently Asked Questions (FAQ)

This section is currently under development. For specific questions, please refer to the troubleshooting section or contact support.

• Q: What is LRDIMM memory?
  A: LRDIMM (Load-Reduced DIMM) uses a buffer to reduce the electrical load on the memory controller, allowing for higher capacities and speeds in server environments compared to RDIMM (Registered DIMM).
• Q: Can I mix LRDIMM with RDIMM or unbuffered memory?
  A: No, LRDIMM memory cannot be mixed with RDIMM or unbuffered (UDIMM) memory in the same system. All installed memory modules must be of the same type.
• Q: How do I know if my server supports 128GB DDR4 LRDIMM?
  A: You must consult your server's motherboard or system manual. It will specify the supported memory types, capacities per slot, and total maximum memory.

10. Warranty and Support

For the most up-to-date version of this manual and for FCC Compliance Information, please see the Supermicro website at www.supermicro.com.

For detailed warranty information and support, please refer to the official Supermicro documentation or contact Supermicro customer service directly.

An official item guide and document in PDF format is available for review: User Manual (PDF).