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Chapter 1 System Overview 1-5
M8000/M9000 servers have the following features:
■ Multicore SPARC64 VI/SPARC64 VII/SPARC64 VII+ gigahertz processors
These processors provide superior performance, due to their high scalability
allowing expansion to up to 64 dual-core CPU modules, and technologies
enabling high-speed arithmetic operations and data transfers.
Reliability and availability are enhanced with Error Checking and Correction
(ECC) data protection and instruction retry.
As faster and higher-performing CPU modules become available, they can be
added to or replace existing installed CPU modules to further improve
performance.
The system uses symmetric multiple-processing (SMP), so each CPU can access
any part of system memory regardless of its mounting location. Adding more
CPUs does not affect memory access to any of the installed CPUs.
■ High-speed crossbar-type system bus
The high-speed crossbar-type system bus that provides high-speed wide-band
data transfer maximizes the performance of the SPARC64 VI/SPARC64
VII/SPARC64 VII+ processors.
■ ECC memory
ECC functionality protects data on all system buses and in memory, so that any
errors in data are automatically corrected. In addition to ECC memory, Chipkill
memory protection is supported.
■ PCI Express (PCIe) is mounted as I/O buses
PCIe, with a maximum bus width of eight lanes is used for the inter-connect bus
with the I/O device.
■ An optional External I/O Expansion Unit enables I/O slot expansion in the
system.
Connect an External I/O Expansion Unit to add more PCIe and PCI-X slots to the
server.
An External I/O Expansion Unit is connected by a cable to a link card plugged
into a PCIe slot in an I/O unit.
■ The main components, power supply units, and FAN units can be configured to
be redundant
Redundant configurations can be used for the main components, such as a power
supply unit, FAN unit, hard disk drive, and PCI card. Implementation of
redundant configurations enables operation to continue without interruption
even if one of the units making up part of the system fails.