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2 IBM ^ xSeries 440 Planning and Installation Guide
Memory enhancement such as memory mirroring, Chipkill, and Memory
ProteXion
Six Active PCI-X slots: two 64-bit 133 MHz, two 64-bit 100 MHz, two 64-bit
66 MHz
Connectivity to an RXE-100 external PCI-X enclosure for an additional 12
PCI-X slots
Integrated dual-channel Ultra160 SCSI controller
Two hot-swap 1” drive bays
Support for major storage subsystems, including Fibre Channel and
ServeRAID
Light Path Diagnostics and the Remote Supervisor Adapter for systems
management
Integrated 10/100/1000 Mbps Ethernet controller
The ability to connect multiple systems together and to partition them is the
implementation of the concept of
XpandOnDemand.
XpandOnDemand represents the first industry-standard implementation of true
“pay-as-you-grow” servers. New levels of scalability are achieved using a building
block design that allows more cost-effective scalability. These technologies,
powered by the XA-32 chipset, will provide scalability from two-way up to 16-way
systems using “scalable enterprise nodes”, the x440s being each of those nodes,
and, optionally, one or more external remote I/O enclosures.
Each scalable enterprise node contains processors, memory, I/O support,
storage and other devices and operates as an independent system. Each node
may run a different operating system from the other nodes, or if desired multiple
nodes can be assigned to one operating system image via system partitioning.
Nodes are attached to one another through dedicated high-speed
interconnections, called SMP Expansion Ports. This offers the flexibility to run
several hardware nodes as either a single complex of nodes or as two or more
smaller units to support multiple operating systems and/or clustered
configurations. The nodes can even be rearranged later into other configurations,
as needed.
1.1 The x440 product line
The models of the x440 are being made available throughout 2002. This is
because the complexity associated with developing the new IBM XA-32 chipset,
formerly known by its code name “Summit”, has meant additional development
and testing being required for introducing the x440 above that required of other