120 IBM z13s Technical Guide
Channels: Channels can be shared between LPARs by including the partition name in the
partition list of a channel-path identifier (CHPID). I/O configurations are defined by the
IOCP or the HCD with the CHPID mapping tool (CMT). The CMT is an optional tool that is
used to map CHPIDs onto physical channel IDs (PCHIDs). PCHIDs represent the physical
location of a port on a card in an I/O cage, I/O drawer, or PCIe I/O drawer.
IOCP
4
is available on the z/OS, z/VM, and z/VSE operating systems, and as a stand-alone
program on the hardware console. HCD is available on the z/OS and z/VM operating
systems. Consult the appropriate 2965DEVICE Preventive Service Planning (PSP)
buckets before implementation.
Fibre Channel connection (FICON) channels can be managed
by the Dynamic CHPID
Management (DCM) function of the Intelligent Resource Director. DCM enables the
system to respond to ever-changing channel requirements by moving channels from
lesser-used control units to more heavily used control units, as needed.
Modes of operation
Table 3-4 shows the modes of operation, summarizing all available mode combinations,
including their operating modes and processor types, operating systems, and addressing
modes. Only the currently supported versions of operating systems are considered.
Table 3-4 z13s modes of operation
The 64-bit z/Architecture mode has no special operating mode because the architecture
mode is not an attribute of the definable images operating mode. The 64-bit operating
systems are in 31-bit mode at IPL and, optionally, can change to 64-bit mode during their
initialization. The operating system is responsible for taking advantage of the addressing
capabilities that are provided by the architectural mode.
For more information about operating system support, see Chapter 7, “Software support” on
page 229.
4
For more information, see z Systems Input/Output Configuration Program User's Guide for ICP IOCP, SB10- 7163.
Image mode PU type Operating system Addressing mode
ESA/390 CP and zIIP z/OS
z/VM
64-bit
CP z/VSE and Linux on z Systems (64-bit) 64-bit
CP Linux on z Systems (31-bit) 31-bit
ESA/390 TPF CP only z/TPF 64-bit
Coupling facility ICF or CP CFCC 64-bit
Linux only IFL or CP Linux on z Systems (64-bit) 64-bit
z/VM
Linux on z Systems (31-bit) 31-bit
z/VM CP, IFL, zIIP, or ICF z/VM 64-bit
zACI
a
a. z Appliance Container Infrastructure
IFL or CP IBM zAware 64-bit
z/VSE Network Appliance
b
b. Planned; will be supported
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