IBM z13s Technical Manual page 60

z/VM Support
z/VM Support for the z13 servers includes but is not limited to these enhancements:
z/VM 6.2 and 6.3 provide these enhancements:
– Guest support for Crypto Express5S, and support for 85 Crypto Express domains.
– Absolute Capping of an LPAR group, enabling each LPAR to consume capacity up to
its individual limit.
In addition, z/VM 6.3 will provide support for the following enhancements with service:
– Guest exploitation support of SMC-D.
– Dynamic Memory Management, which provides improved efficiency for memory
upgrades by using only a portion of the reserved main storage for the partition by
initializing and clearing just the amount of storage requested.
– Guest exploitation of Vector Facility (SIMD).
z/VM SMT exploitation for IFL processors in a Linux only mode or for a z/VM mode LPAR.
Note that z/VM SMT exploitation support does not virtualize threads for Linux guests, but
z/VM itself is designed to achieve higher throughput through SMT.
z/VM CPU pools for limiting the CPU resources consumed by a group of virtual machines
to a specific capacity.
z/VM Multi-VSwitch Link Aggregation allows a port group of OSA-Express features to
span multiple virtual switches within a single z/VM or between multiple z/VM systems to
increase optimization and utilization of OSA-Express when handling larger traffic loads.
z/OS Support
z/OS uses many of the new functions and features of IBM z13 servers that include but are not
limited to the following:
z/OS V2.2 supports zIIP processors in SMT mode to help improve throughput for zIIP
workloads. This support is also available for z/OS V2.1 with PTFs.
z/OS V2.2 supports up to 141 processors per LPAR or up to 128 physical processors per
LPAR in SMT mode.
.z/OS V2.2 also supports up to 4 TB of real memory per LPAR. This support is also
available on z/OS V2.1 with PTFs.
z/OS V2.2 supports the vector extension facility (SIMD) instructions. This support is also
available for z/OS V2.1 with PTFs.
z/OS V2.2 supports up to four subchannel sets on IBM z13 and z13s servers to help
relieve subchannel constraints, and can allow you to define larger I/O configurations that
support multi-target Metro Mirror (PPRC) sets. This support is also available for z/OS
V1.13 and z/OS V2.1 with service.
z/OS V1.13 and later releases support z13 and z13s FICON function to allow cascading
up to 4 FICON switches. Dynamic cache management (DCM) support is provided for
cascaded switches on z/OS V2.1 and later.
z/OS V2.1 and later with PTFs is designed to use the Read Diagnostic Parameters (RDP)
Extended Link Service (ELS) on z13 and z13s processors to retrieve and display
information about the status of FICON fiber optic connections, and to provide health
checks for diagnosing FICON error conditions that might help with early detection of
deterioration of connection quality.
z/OS V2.2 running on IBM z13 and z13s servers with IBM System Storage® DS8000®
devices and a minimum MCL supports a new health check for FICON dynamic routing that
is designed to check all components of a dynamic routing fabric. This support, which is
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IBM z13s Technical Guide