Conceptual Overview Of System Control Elements - IBM z13s Technical Manual

Figure 2-10 depicts a logical diagram of the system control design.
Primary SE
HMC
Alternate SE
Customer
LAN 1
Customer
LAN 2
Figure 2-10 Conceptual overview of system control elements
Note: The maximum number of drawers (CEC and I/O) is four for z13s servers. The
diagram in Figure 2-10 references the various supported FSP connections
A typical FSP operation is to control a power supply. An SE sends a command to the FSP to
start the power supply. The FSP (through SSI connections) cycles the various components of
the power supply, monitors the success of each step and the resulting voltages, and reports
this status to the SE.
Most system elements are duplexed (n+1), and each element has at least one FSP. Two
internal
Ethernet LANs are used by two SEs, for redundancy. Crossover capability between
the LANs is available so that both SEs can operate on both LANs.
The HMCs and SEs are connected directly to one or two Ethernet Customer LANs. One or
more HMCs can be used.
System Control Hub - 1
System Control Hub - 2
FSP
FSP FSP FSP
CEC
CEC
Drawer
Drawer
Chapter 2. Central processor complex hardware components
Bulk Power
OSC
Controllers
Internal FSP
Internal FSP
FSP
FSP FSP FSP
PCIe
PCIe
Drawer
Drawer
FSP FSP
I/O
Drawer
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