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IBM System x3950 M2 and x3850 M2 Technical Introduction
IBM ScaleXpander Option Kit
Unlike the x3850, the x3850 M2 can be converted to an x3950 M2 through the use of the
ScaleXpander Option Kit, part number 44E4249. After this kit is installed the x3850 M2
functionally becomes an x3950 M2, and is therefore able to form part of a multi-way
configuration.
The IBM XpandOnDemand Scalability Kit contains the following items:
Scalability cable 3.08m
Processors
Dual-core Intel Xeon 7100 series
Dual-core Intel Xeon E7210 and
quad-core Intel Xeon E7300 series
processors
Frontside bus
Two 667 MHz (two processors on each
bus)
Four 1066 MHz (one processor on each
bus)
Memory controller
Hurricane 3.0
Hurricane 4.0
Maximum SMP
32 sockets using eight chassis.
With dual-core processors, maximum of
64 cores.
16 sockets using four chassis.
With quad-core processors, maximum of
64 cores.
Memory
16 DDR2 DIMM sockets per node.
Maximum of 4 memory cards, each with 4
DDR2 DIMM slots running at 333 MHz.
64 GB maximum per node.
512 GB maximum with 8 nodes.
32 DDR2 DIMM sockets per node.
Maximum of 4 memory card, each with 8
DDR2 DIMM slots running at 533 MHz.
256 GB maximum per node.
1 TB maximum with 4 nodes.
Internal disks
Six hot-swap bays
Four hot-swap bays
Disk subsystem
Adaptec AIC9410, no external port
LSI 1078, external SAS 4x port
RAID support
Standard not supported only via optional
ServeRAID-8i
Standard RAID-0 and RAID-1, additional
RAID features via optional
ServeRAID-MR10k
PCI-X slots per node
Two or six, depending on model
None
PCI Express slots per node
Some models have four PCI Express x8
full-length slots
Seven PCI Express x8 half-length slots
Active PCI slots
Six
Two
Ethernet controller
Broadcom 5704 dual Gigabit Ethernet
Broadcom 5709C dual Gigabit Ethernet
Video controller
ATI Radeon 7000M 16 MB onboard
ATI ES1000 16MB memory on RSA II
Keyboard and mouse
connectors
PS/2
USB
Service processor
RSA II SlimLine standard
RSA II standard
Trusted Platform Module
Not implemented
Trusted Platform Module (TPM) with TCG
V1.2 compliance.
Power supply
Two 1300W supplies
Two 1440W supplies
Mechanical
3U height
4U height
Feature
x3950 server
x3950 M2 server