information about installing DIMMs for memory mirroring, see “Memory
mirroring” on page 46 and “Installing a memory module” on page 43 for more
information.
v Memory sparing
The server supports memory sparing. Memory sparing reserves memory
capacity for failover in the event of a DIMM failure, and the reserved capacity is
subtracted from the total available memory. Memory sparing provides less
redundancy than memory mirroring does. If a predetermined threshold of
correctable errors is reached, the contents of the failing DIMM are copied to the
spare memory, and the failing DIMM or rank is disabled. To enable memory
sparing through the Setup utility, select System Settings → Memory → Memory
Mode → Sparing. For information about installing DIMMs for memory sparing,
see “Memory sparing” on page 48.
v Multi-core processors
The server supports up to four Intel Xeon
™
EP 4S E5-4600 series, four-core,
six-core, and eight-core microprocessors (depending on your model). The server
comes with a minimum of one microprocessor.
Note: To install the third and fourth microprocessors, you must purchase and
install an optional microprocessor and memory expansion tray. Both of the
microprocessors must be installed as a pair on the microprocessor and memory
expansion tray.
v PCI Express Gen3 adapter capabilities
The server provides up to eight PCIe Gen3 adapter slots. The system board
provides five low-profile PCIe Gen3 adapter slots and the optional PCI riser-card
provides three x8 (x16 mechanical) PCIe Gen3 adapter slots. See “Installing an
adapter” on page 70 for detailed information.
Note: The second microprocessor must be installed on the system board for the
server to support more than three PCIe slots on the system board or the optional
PCI riser card.
v Redundant connection
The integrated Emulex BE3 dual-port Ethernet controller provides failover
capability to a redundant Ethernet connection with the applicable application
installed. If a problem occurs with the primary Ethernet connection and an
optional Ethernet adapter is installed in the server, all Ethernet traffic that is
associated with the primary connection is automatically switched to an optional
Ethernet connection. If the applicable device drivers are installed, this switching
occurs without data loss and without user intervention.
v Redundant cooling and optional power capabilities
The server comes with six dual-motor, counter-rotating, speed-controlled
hot-swap fans, which provide redundancy and hot-swap capability for a full
configuration. The redundant cooling by the fans in the server enables continued
operation if one of the fan motors fails.
The server comes with one 900-watt or one 1400-watt hot-swap power supply.
The server supports a maximum of two 900-watt or two 1400-watt hot-swap
power supplies. For redundancy support, two power supplies must be installed
in the server. Two power supplies enables continued operation if one of the
power supplies fails. You can order the optional IBM Power Interposer for
Redundant Power Option Kit or the optional IBM Microprocessor and Memory
Expansion Tray to install a second power supply.
v Remote presence and blue-screen capture features
12 System x3750 M4 Types 8722 and 8733: Installation and Service Guide
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