Lenovo 3724, 3836, 3809, 3826, 3824, 3808 Specifications, RAID support, Symmetric multiprocessing SMP

Some models support memory mirroring. Memory mirroring replicates and stores data on two pairs of DIMMs within two channels (channel 0 and 1) simultaneously. If a failure occurs, the memory controller switches from the primary pair of memory DIMMs to the backup pair of DIMMs. To support memory mirroring, you must install a pair of DIMMs at a time. One DIMM must be in channel 0, and the mirroring DIMM must be in the same slot in channel 1. For more information, see 91.

vRAID support

The ServeRAID adapter provides hardware redundant array of independent disks (RAID) support to create configurations. The standard RAID adapter provides RAID levels 0, 1, and 1E. The optional RAID adapters are available for purchase and provide RAID levels 0, 1, 5, 6, 10, 50, and 60. See “Installing an adapter” on page 96 and “Using the LSI Configuration Utility program” on page 143 for more information about supported adapters and creating RAID arrays.

vSymmetric multiprocessing (SMP)

The server supports up to two Intel Xeon microprocessors. Each microprocessor provides symmetric multiprocessing capability. When you install the second microprocessor, this will enhance the performance of the server.

vSystems-management capabilities

The server comes with an integrated management module (IMM). When the IMM is used with the systems-management software that comes with the server, you can manage the functions of the server locally and remotely. The IMM also provides system monitoring, event recording, and network alert capability. The systems-management connector on the rear of the server is dedicated to the IMM. The dedicated systems-management connector provides additional security by physically separating the management network traffic from the production network. You can use the Setup Utility to configure the server to use a dedicated systems-management network or a shared network.

vTCP/IP offload engine (TOE) support

The Ethernet controllers in the server support TOE, which is a technology that offloads the TCP/IP flow from the microprocessor and I/O subsystem to increase the speed of the TCP/IP flow. When an operating system that supports TOE is running on the server and TOE is enabled, the server supports TOE operation. See the operating-system documentation for information about enabling TOE. The Windows operating system requires that the Windows Scalable Network Pack (SNP) be installed for TOE support.

Note: As of the date of this document, the Linux operating system does not support TOE.

Specifications

The following information is a summary of the features and specifications for machine types 3724, 3808, 3809, 3815, 3817, 3824, 3826, 3836. Depending on the server model, some features might not be available, or some specifications might not apply.

Chapter 3. What is included with your server 9