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Chapter 2. IBM eX5 technology
33
Table 2-2 through Table 2-4 show the memory capacity and bandwidth increases that are
possible with MAX5 for the HX5, x3690 X5, and x3850 X5.
Table 2-2 HX5 compared to HX5 with MAX5
Table 2-3 x3690 X5 compared to x3690 X5 with MAX5
Table 2-4 x3850 X5 compared to x3850 X5 with MAX5
For more information about system-specific MAX5 installation options, see the following
sections:
IBM System x3850 X5: “MAX5 memory” on page 79
IBM System x3690 X5: 4.8.3, “MAX5 memory” on page 136
IBM BladeCenter HX5: “MAX5 memory population order” on page 198
2.5 Scalability
The architecture of the eX5 servers permits system scaling of up to two nodes on HX5 and
x3850 X5. The architecture also supports memory scaling. Figure 2-12 shows these types of
scaling.
Figure 2-12 Types of scaling with eX5 systems
The x3850 X5 and HX5 both support 2-node system scaling or memory scaling. The
x3690 X5 supports memory scaling only.
HX5
HX5 with MAX5
Memory bandwidth
16 DDR3 channels at 978 MHz
16 DDR3 channels at 978 MHz
+ 12 DDR3 channels at 1066 MHz
Memory capacity
128 GB using 8 GB DIMMs
320 GB using 8 GB DIMMs
x3690 X5
x3690 with MAX5
Memory bandwidth
32 DDR3 channels at 1066 MHz
a
a. Must install optional mezzanine board
64 DDR3 channels at 1066 MHz
Memory capacity
512 GB using 16 GB DIMMs
1 TB using 16 GB DIMMs
x3850 X5
x3850 X5 with MAX5
Memory bandwidth
32 DDR3 channels at 1066 MHz
48 DDR3 channels at 1066 MHz
Memory capacity
1 TB using 16 GB DIMMs
1.5 TB using 16 GB DIMMs
Memory scaling
System scaling
Server
MAX5
QPI Scaling
Server
QPI Scaling
Server
Содержание x3850 X5
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