IBM z13s, Техническое руководство

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IBM z13s Technical Guide
򐂰 Recovery unit (RU): The RU keeps a copy of the complete state of the system that
includes all registers, collects hardware fault signals, and manages the hardware recovery
actions.
򐂰 Dedicated Coprocessor (COP): The dedicated coprocessor is responsible for data
compression and encryption functions for each core.
Figure 2-14 PU Core floorplan
2.3.4 PU characterization
In each CPC drawer, PUs can be characterized for client use. The characterized PUs can be
used in general to run supported operating systems, such as z/OS, z/VM, and Linux on
z Systems. They can also run specific workloads, such as Java, XML services, IPSec, and
some DB2 workloads, or functions such as Coupling Facility Control Code (CFCC). For more
information about PU characterization, see 3.5, “Processor unit functions” on page 100.
The maximum number of characterized PUs depends on the z13s model. Some PUs are
characterized by the system as standard system assist processors (SAPs) to run the I/O
processing. By default, there are at least two spare PUs per Model N20 system that are used
to assume the function of a failed PU. The remaining installed PUs can be characterized for
client use. The Model N10 uses unassigned PUs as spares when available. A z13s model
nomenclature includes a number that represents the maximum number of PUs that can be
characterized for client use, as shown in Table 2-3.
Table 2-3 Number of PUs per z13s model
IDU
FXU
COP
VFU
RU
IFB
ICM XU
L2I L2D
PC
LSU
ISU
Model CPC
Drawers
/ PUs
PUs IFLs
uIFLs
zIIPs ICFs Standard
SAPs
Optional
SAPs
Standard
Spares
IFP
N10 1 / 13 0-6 0-10 0-6 0-10 2 0-2 0 1
N20 1 / 26 0-6 0-20 0-12 0-20 3 0-3 2 1
N20 2 / 26 0-6 0-20 0-12 0-20 3 0-3 2 1