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LP1
LP2
C
C
C
C
C
C
C
C
C
N
N
N
N
N
N
N
N
N
C
C
C
C
C
C
C
C
C
Cluster 1
Figure 2-9. Consolidating ESCON Channels and ESCON Control Unit Ports
ESCD Configurations: Figure 2-10 on page 2-25 shows how shared ESCON
channels can reduce ESCD port requirements. In this example, two shared ESCON
channels replace 10 unshared (dedicated or reconfigurable) ESCON channels and
use eight fewer ESCD ports without a reduction in I/O connectivity.
2-24
PR/SM Planning Guide
LP3
LP4
C
C
C
C
C
C
C
N
N
N
N
N
N
N
C
C
C
C
C
C
C
Without shared
ESCON channels
Cluster 2
With shared
ESCON channels
LP1
LP2
LP3
LPAR
C
C
C
C
N
N
N
N
C
C
C
C
3990
Cluster 1
Cluster 2
LP4
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