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Chapter 8. System upgrades
This chapter provides an overview of IBM z Systems z13s upgrade capabilities and
procedures, with an emphasis on capacity on demand (CoD) offerings.
The upgrade offerings to the z13s central processor complex (CPC) have been developed
from previous IBM z Systems servers. In response to customer demands and changes in
market requirements, a number of features have been added. The changes and additions are
designed to provide increased customer control over the capacity upgrade offerings with
decreased administrative work and enhanced flexibility. The provisioning environment gives
the customer an unprecedented flexibility, and a finer control over cost and value.
Given today’s business environment, the growth capabilities of z13s servers provide these
benefits, among others:
Enabling exploitation of new business opportunities
Supporting the growth of dynamic, smart environments
Managing the risk of volatile, high-growth, and high-volume applications
Supporting 24x365 application availability
Enabling capacity growth during lockdown periods
Enabling planned downtime changes without availability effects
This chapter provides information about the following topics:
Upgrade types
Concurrent upgrades
Miscellaneous equipment specification upgrades
Permanent upgrade through the CIU facility
On/Off Capacity on Demand
Capacity for Planned Event
Capacity BackUp
Nondisruptive upgrades
Summary of capacity on-demand offerings
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