System information

268 Logical Partitions on System i5
– In the second scenario, there are also enough available disk slots and PCI slots in the
5094 to relocate the (15) of the Primary partition during the migration. However, there
are other considerations in this scenario. The 825 has three HSL Loops and the 570
System i5 only has one. It is important to consider the HSL cabling between different
technology towers to avoid performance degradation. For instance, the 5074 uses
HSL1, whereas the 5094 and 5088 uses more recent HSL2 technology. In the original
825 configuration they were placed in different loops to help with this consideration but
now there is only one loop. The solution is to place the 5074 in between the 5094 and
5088, minimizing the effects of any contention caused by the slower 5074 hardware.
See Figure 9-18.
Figure 9-18 HSL cabling second scenario
5. Steps 3a through 3f are repeated for the proposed 520 and 570 System i5 systems. This
will illustrate the LPAR configuration and resource allocation as well as the configurations
for the proposed systems to be ordered. The following images contain relevant portions of
the
Detail reports for both of the proposed systems. See Figure 9-19 on page 269 through
Figure 9-26 on page 272.
2 HSL Loops
825
5088
5094
570
5088
5074
5094
1 HSL Loop
Current System
Proposed System
P0
P0
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