IBM 7383, Инструкция по установке и обслуживанию, Страница: 29 / 488

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
module installation” on page 59 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 module installation” on page 59.
v
Multi-core processors
The server supports up to two Intel Xeon
™
E5-2600 series multi-core
microprocessors. The server comes with only one microprocessor installed.
v
PCI adapter capabilities
The server has six PCI interface slots. Slot 1 can support PCI Express or PCI-X
adapters through an optional PCI-X interposer card. See “Installing an adapter”
on page 242 for detailed information.
v
Redundant connection
The addition of the optional Ethernet daughter card provides failover capability
to a redundant Ethernet connection with the applicable application installed. If a
problem occurs with the primary Ethernet connection and the optional Ethernet
daughter card is installed on the server, all Ethernet traffic that is associated
with the primary connection is automatically switched to the optional redundant
Ethernet daughter card 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 supports a maximum of two 750-watt or 900-watt hot-swap power
supplies and six simple-swap fans, which provide redundancy and hot-swap
capability for a typical configuration. The redundant cooling by the fans in the
server enables continued operation if one of the fans fails. The server comes
with one 750-watt or 900-watt hot-swap power supply and two fans.
You must install fan 2 when you install the second microprocessor in the server.
You can order the optional fan 4, 5, and 6 for cooling redundancy. You can order
the second optional power supply for power redundancy.
Note:
1.
You cannot mix 750-watt and 900-watt power supplies in the server.
2. The server is not running in power redundant mode with two 225W GPUs
installed, two 900-watt power supplies are required.
v
Remote presence and blue-screen capture features
Chapter 1. The IBM System x3500 M4 Type 7383 server
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