Memory problems

vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

vSee the parts listing in Chapter 6, “Parts listing, RD230 Types 1043, 1044, 4010, and 4011,” on page 91 to determine which components are customer replaceable units (CRUs) and which components are field replaceable units (FRUs).

vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.

Symptom

Action

 

 

 

The amount of system memory

1.

Make sure that:

that is displayed is less than the

 

v No error LEDs are lit on the operator information panel or on the DIMM.

amount of installed physical

 

 

v Memory mirroring does not account for the discrepancy.

memory.

 

 

 

v The memory modules are seated correctly.

 

 

v You have installed the correct type of memory.

 

 

v If you changed the memory, you updated the memory configuration in the

 

 

Setup Utility program.

 

 

v All banks of memory are enabled. The server might have automatically

 

 

disabled a memory bank when it detected a problem, or a memory bank

 

 

might have been manually disabled.

 

2.

Check the POST event log for DIMM error messages:

 

 

v If a DIMM was disabled by a systems-management interrupt (SMI), replace

 

 

the DIMM.

 

 

v If a DIMM was disabled by the user or by POST, run the Setup Utility

 

 

program and enable the DIMM.

 

3.

Make sure that there is no memory mismatch when the server is at the

 

 

minimum memory configuration.

 

4.

Add one pair of DIMMs at a time, making sure that the DIMMs in each pair

 

 

are matching.

 

5.

Reseat the DIMMs.

 

6.

Replace the DIMMs in step 5, one at a time, in the order shown, restarting the

 

 

server each time.

 

 

 

Multiple rows of DIMMs in a

1.

Reseat the DIMMs; then, restart the server.

branch are identified as failing.

2.

Replace the lowest-numbered DIMMs with identical known good DIMMs;

 

 

 

then, restart the server. Repeat as necessary. If the failures continue after all

 

 

identified pairs are replaced, go to step 4.

 

3.

Return the removed DIMMs, one pair at a time, to their original connectors,

 

 

restarting the server after each pair, until a pair fails. Replace each DIMM in

 

 

the failed pair with an identical known good DIMM, restarting the server after

 

 

you reinstall each DIMM. Replace the failed DIMM. Repeat step 3 until you

 

 

have tested all removed DIMMs.

 

4.

(Trained service technician only) Replace the system board.

 

 

 

Chapter 3. Diagnostics 17

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Lenovo RD230 manual Memory problems

RD230 specifications

The Lenovo RD240 and RD230 are key players in the realm of enterprise-class servers, leveraging advanced technologies to deliver efficiency, reliability, and performance. These servers are designed to cater to the demands of small to medium-sized businesses, providing robust solutions for various workloads.

The Lenovo RD240 is a 2U rack server that features dual-socket support for Intel Xeon processors. This capability allows it to handle intensive computational tasks seamlessly, making it ideal for virtualized environments and database management. Equipped with up to 512GB of DDR3 memory, the RD240 ensures high memory bandwidth and reduced latency, improving overall system responsiveness.

In terms of storage, the RD240 supports a versatile range of options, with configurations allowing for up to twelve 3.5-inch hard drives or a combination of SSDs and HDDs. This flexibility enables businesses to tailor their storage solutions based on performance and capacity needs. Additionally, the server includes integrated RAID options, which enhance data protection and availability.

On the other hand, the RD230 is a compact 1U rack server that prioritizes space efficiency without compromising on performance. Like its larger counterpart, the RD230 supports dual Intel Xeon processors, but its design focuses on providing a more streamlined solution for environments with limited rack space. With support for up to 128GB of RAM, the RD230 can efficiently handle various applications, from web hosting to application serving.

Both servers are equipped with advanced management tools, such as the Lenovo XClarity Controller, which simplifies system monitoring and maintenance. This allows IT administrators to deploy updates, monitor hardware health, and manage resources with ease, leading to minimized downtime and optimized performance.

Furthermore, Lenovo places a strong emphasis on energy efficiency, ensuring that both the RD240 and RD230 have features like power management and cooling technologies. These innovations reduce their carbon footprint while lowering operating expenses, making them attractive choices for environmentally-conscious businesses.

In summary, the Lenovo RD240 and RD230 servers offer a blend of performance, flexibility, and efficient management, catering to the diverse needs of modern enterprises. With their robust features and reliable characteristics, they stand as dependable solutions for businesses looking to enhance their IT infrastructure while supporting future scalability.