Lenovo TD100 User Guide - Page 20
Reliability, availability, serviceability - memory
UPC - 884343312385
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eight industry-standard, 2-way interleaved, x4 or x8, 1.8 V, 240-pin, double-data-rate 2 (DDR2), PC2-5300, 677 MHz, dynamic random-access memory (DRAM) fully buffered (FBD) dual inline memory modules (DIMMs). TD100x The server supports up to 48 GB (reduced to 24 GB in mirrored mode) of system memory. The memory controller supports error correcting code (ECC) for up to 12 240-pin, DDR1, PC2-5300, SDRAM, 667 MHz, fully buffered DIMMs. v Memory mirroring Some models support memory mirroring. Memory mirroring replicates and stores data in DIMMs within two branches simultaneously. To support memory mirroring, you must have at least two pairs of DIMMs installed (a pair in each branch). Pairs of DIMMs that are next to each other (for example, DIMM slot 1 and DIMM slot 4) within the channels of the same branch must be identical pairs of full-buffered, dual inline memory modules (DIMMs). For more information, see "Installing a memory module" on page 28. v Online-spare memory Some models support online-sparing memory. Online-spare memory disables a failed rank pair of DIMMs from the system configuration and activates an online-spare rank pair of DIMMs to replace the failed rank pair of DIMMs. For an online-spare pair of DIMMs to be activated, you must enable this feature and have installed an additional pair of DIMMs of the same speed, type, size (or larger), and technology as the failed pair of DIMMs. For more information, see "Installing a memory module" on page 28. v Redundant power capabilities Some models support up to two 835-watt power supplies, which provide redundancy and hot-swap capability for a typical configuration. If the maximum load on the server is less than 835 watts and a problem occurs with one of the power supplies, the other power supply can meet the power requirements. v ServeRAID™ support Some models support ServeRAID adapters to create redundant array of independent disks (RAID) configurations. Some models also have integrated RAID level-0 and level-1 support. v Symmetric 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. v Systems-management capabilities The server supports an optional Remote Supervisor Adapter II SlimLine, which provides service-processor functions in addition to those that the BMC provides. When this adapter is used with the systems-management software that comes with the server, you can manage the functions of the server locally and remotely. The Remote Supervisor Adapter II SlimLine also provides system monitoring, event recording, and dial-out alert capability. See the documentation that comes with your systems-management software for more information. Reliability, availability, and serviceability Three important server design features are reliability, availability, and serviceability (RAS). The RAS features help to ensure the integrity of the data that is stored in the server, the availability of the server when you need it, and the ease with which you can diagnose and repair problems. 6 ThinkServer TD100 and TD100x Types 4203, 4204, 4205, 4206, 6398, 6399, 6419, and 6429: User Guide