IBM x3750 M4, Инструкция по установке и обслуживанию, Страница: 27 / 694

to 768 GB of additional memory (depending on the DIMM size) and two
additional microprocessor sockets. The server memory controller supports error
correcting code (ECC) for up to 48 industry-standard PC3-12800R 1600 MHz,
PC3L-10600R-999 1333 MHz or PC3L-10600 1333 MHz Load Reduced (LR),
single-rank, dual-rank, or quad-rank, DDR3 (third-generation double-data-rate),
registered, synchronous dynamic random access memory (SDRAM) DIMMs.
v
Light path diagnostics
Light path diagnostics provides LEDs to help you diagnose problems. For more
information about light path diagnostics and the LEDs, see “Light path
diagnostics” on page 18 and “Light path diagnostics LEDs” on page 159.
v
Memory mirroring
Memory mirroring provides a redundant copy of all code and data that are
addressable in the configured memory map. Through the microprocessor
memory controller chip set, memory mirroring replicates and stores data across
DIMMs on two or four memory channels simultaneously. If a failure occurs, the
memory controller switches from the DIMMs on the primary channel to the
DIMMs on the backup channel. To enable memory mirroring through the Setup
utility, select
System Settings
→
Memory
→
Memory Mode
→
Mirroring . For
information about installing DIMMs for memory mirroring, see “Memory
mirroring” on page 44 and “Installing a memory module” on page 41 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 45.
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 66 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
Chapter 1. The System x3750 M4 Types 8722 and 8733 server
11