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v Redundant cooling and power capabilities
v Large memory capacity
MAX5 reliability, availability, and serviceability features
Three of the most important features in product design are reliability, availability,
and serviceability (RAS). These factors help to ensure that the integrity of the data
processed in your MAX5 memory expansion module is preserved, that the
expansion 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 module
supports:
v 1-year parts and 1-year labor limited warranty or it assumes the warranty of the
v Chipkill memory protection
v Hot-swap and redundant cooling with fan-speed-sensing capability (front
v Hot-swap and redundant power supplies (rear serviceability)
v Information LED panel
v In-rack serviceability
v 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 down
v Rear serviceability power supplies
MAX5 indicators, LEDs, and power
This section describes the indicators and light-emitting diodes (LEDs) on the front
and rear of the IBM MAX5 for System x (MAX5) memory expansion module.
Front view
The following illustration shows the indicators on the front of the MAX5 expansion
module. All of the LEDs are controlled by the host server integrated management
module (IMM).
Note: The MAX5 memory expansion module does not have a power-on switch or
button. The MAX5 and all other functions are controlled by the host server to which
it is connected.
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IBM System x3850 X5 and x3950 X5 Types 7145 and 7146: Installation and User's Guide
The MAX5 expansion module supports a maximum of two 675-watt hot-swap
power supplies and five single-motor hot-swap fans, which provides redundancy
and hot-swap capability. The redundant cooling by the fans enables continued
operation if one fan fails. The MAX5 comes with one 675-watt hot-swap power
supply and five fans. If a problem occurs with one of the power supplies, the
other power supply can meet the power requirements.
The memory bus supports up to 512 GB of memory. The memory controller
supports error correcting code (ECC) for up to 32 industry-standard 1066 MHz
PC3-10600R-999 or 1333 MHz PC3-8500, DDR3 (third-generation
double-data-rate), registered, synchronous dynamic random access memory
(SDRAM) dual inline memory modules (DIMMs).
x3850 X5 or x3950 X5 server when attached, whichever is longer.
serviceability)
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