Memory mirroring

To install a DIMM, complete the following steps.

1.Read the safety information that begins on page v and “Installation guidelines” on page 29.

2.Turn off the server and peripheral devices, and disconnect the power cord and all external cables.

Attention: In a dc power environment, only trained service personnel other than Lenovo service technicians are authorized to connect or disconnect power to the dc power supply. See the documentation that comes with each dc power supply.

3.Remove the cover (see “Removing the cover” on page 31).

Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, open and close the clips gently.

4.Remove the riser-card assembly (see “Removing the riser-card assembly” on page 32).

5.Remove the DIMM air baffle (see “Removing the DIMM air baffle” on page 37).

6.Open the retaining clip on each end of the DIMM connector.

7.Touch the static-protective package that contains the DIMM to any unpainted metal surface on the server. Then, remove the DIMM from the package.

8.Turn the DIMM so that the DIMM keys align correctly with the connector.

9.Insert the DIMM into the connector by aligning the edges of the DIMM with the slots at the ends of the DIMM connector. Firmly press the DIMM straight down into the connector by applying pressure on both ends of the DIMM simultaneously. The retaining clips snap into the locked position when the DIMM is firmly seated in the connector.

Important: If there is a gap between the DIMM and the retaining clips, the DIMM has not been correctly inserted; open the retaining clips, remove the DIMM, and then reinsert it.

If you have other optional devices to install or remove, do so now. Otherwise, go to “Completing the installation” on page 74.

You can configure the server to use memory mirroring. Memory mirroring stores data in two pairs of DIMMs simultaneously. If a failure occurs, the memory controller switches from the active pair to the mirroring pair. Memory mirroring reduces the amount of available memory. Enable memory mirroring through the Configuration/Setup Utility program. See “Configuration/Setup Utility menu choices” on page 80 for details about enabling memory mirroring.

62ThinkServer RD120 Types 6444, 6445, 6446, and 6447: User Guide

RD120 specifications

The Lenovo RD120 is a robust server specifically designed for small to medium-sized businesses looking for reliable performance and efficiency in their IT infrastructure. This tower server is known for its cost-effectiveness while delivering powerful functionalities that support a wide range of applications, from file sharing to email hosting.

One of the main features of the RD120 is its support for Intel's Xeon processors, providing businesses the scalability they need. It can accommodate up to two Xeon processors, enhancing multitasking capabilities and improving overall performance. This makes it suitable for handling various workloads and running multiple applications simultaneously.

In terms of memory, the RD120 supports up to 32GB of DDR3 RAM, offering excellent speed and efficiency for data processing. With multiple DIMM slots available, businesses can upgrade their memory easily depending on their growing needs, ensuring longevity and adaptability for future workloads.

Storage is another strong aspect of the Lenovo RD120. It offers flexible configuration options, supporting up to four hot-swap SATA hard drives and RAID configurations. This means businesses can choose the optimal balance between performance and redundancy, ensuring that data is always safe and accessible. The option for SSDs enhances speed and reliability, catering to data-intensive applications.

Networking capabilities in the RD120 are impressive, with integrated Gigabit Ethernet ports for fast and dependable network connectivity. This feature is crucial for maintaining fast data transfer speeds and ensuring seamless operation across the network.

The server’s design is focused on ease of use and management, featuring a tool-less chassis that simplifies upgrades and maintenance. Additionally, Lenovo provides management tools such as the Integrated Management Module, allowing for remote monitoring and administration. This is essential for any business looking to optimize their server performance without the need for constant on-site management.

Security features are built into the RD120, with options for encryption and secure boot firmware. These capabilities help protect sensitive information and maintain system integrity, aligning with business needs in today’s security-conscious environment.

In conclusion, the Lenovo RD120 comprises a blend of power, flexibility, and user-centric design, catering perfectly to the needs of small and medium businesses. Its efficient performance, robust storage options, and management features make it a valuable asset for any organization looking to establish a reliable and scalable IT infrastructure.