IBM 71455RU Installation And User Manual

Contents

v Redundant cooling and power capabilitiesThe MAX5 expansion module supports a maximum of two 675-watt hot-swappower supplies and five single-motor hot-swap fans, which provides redundancyand hot-swap capability. The redundant cooling by the fans enables continuedoperation if one fan fails. The MAX5 comes with one 675-watt hot-swap powersupply and five fans. If a problem occurs with one of the power supplies, theother power supply can meet the power requirements.v Large memory capacityThe memory bus supports up to 512 GB of memory. The memory controllersupports error correcting code (ECC) for up to 32 industry-standard 1066 MHzPC3-10600R-999 or 1333 MHz PC3-8500, DDR3 (third-generationdouble-data-rate), registered, synchronous dynamic random access memory(SDRAM) dual inline memory modules (DIMMs).MAX5 reliability, availability, and serviceability featuresThree of the most important features in product design are reliability, availability,and serviceability (RAS). These factors help to ensure that the integrity of the dataprocessed in your MAX5 memory expansion module is preserved, that theexpansion module is available when you want to use it, and should a failure occur,you can easily diagnose and repair the failure with minimal inconvenience.The following is an abbreviated list of the RAS features that the expansion modulesupports:v 1-year parts and 1-year labor limited warranty or it assumes the warranty of thex3850 X5 or x3950 X5 server when attached, whichever is longer.v Chipkill memory protectionv Hot-swap and redundant cooling with fan-speed-sensing capability (frontserviceability)v Hot-swap and redundant power supplies (rear serviceability)v Information LED panelv In-rack serviceabilityv Memory redundant bit steering (RBS) and error correcting code (ECC)v Memory mirroring support (mirrored DIMMs are mutually exclusive of each other)v QuickPath Interconnect (QPI) fail downv Rear serviceability power suppliesMAX5 indicators, LEDs, and powerThis section describes the indicators and light-emitting diodes (LEDs) on the frontand rear of the IBM MAX5 for System x (MAX5) memory expansion module.Front viewThe following illustration shows the indicators on the front of the MAX5 expansionmodule. All of the LEDs are controlled by the host server integrated managementmodule (IMM).Note: The MAX5 memory expansion module does not have a power-on switch orbutton. The MAX5 and all other functions are controlled by the host server to whichit is connected.22 IBM System x3850 X5 and x3950 X5 Types 7145 and 7146: Installation and User’s Guide