Upgrade Types - IBM z13s Technical Manual

8.1 Upgrade types

This section summarizes the types of upgrades available for IBM z13s servers.
8.1.1 Overview of upgrade types
Upgrades can be categorized as described in the following scenario.
Permanent and temporary upgrades
In various situations, separate types of upgrades are needed. After a certain amount of time,
depending on your growing workload, you might require more memory, extra I/O cards, or
more processor capacity. However, in certain situations, only a short-term upgrade is
necessary to handle a peak workload, or to temporarily replace lost capacity on a server that
is down during a disaster or data center maintenance. z13s servers offer the following
solutions for such situations:
Permanent upgrades:
– Miscellaneous equipment specification (MES)
The MES upgrade order is always performed by IBM personnel. The result can be
either real hardware added to the server, or the installation of Licensed Internal Code
Configuration Control (LICCC) to the server. In both cases, installation is performed by
IBM personnel.
– Customer Initiated Upgrade (CIU)
Using the CIU facility for a server requires that the online CoD buying feature
(FC 9900) is installed on the server. The CIU facility supports LICCC upgrades only.
Temporary upgrades:
All temporary upgrades are LICCC-based. The billable capacity offering is On/Off CoD.
The two replacement capacity offerings that are available are Capacity BackUp (CBU) and
Capacity for Planned Events (CPE).
For more information, see 8.1.2, "Terminology related to CoD for z13s systems" on page 313.
MES: The MES provides a system upgrade that can result in more enabled processors
and a separate central processor (CP) capacity level, but also in a second CPC drawer,
memory, I/O drawers, and I/O features (physical upgrade). An MES can also upgrade the
IBM z BladeCenter Extension.
Additional planning tasks are required for nondisruptive logical upgrades. Order an MES
through your IBM representative, and the MES is delivered by IBM service personnel.
Concurrent and nondisruptive upgrades
Depending on the effect on system and application availability, upgrades can be classified in
one of the following ways:
Concurrent
Non-concurrent
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In general, concurrency addresses the continuity of operations of the
hardware part of an upgrade, for instance, whether a server (as a box)
is required to be turned off during the upgrade. For more information,
see 8.2, "Concurrent upgrades" on page 317.
This type of upgrade requires stopping the hardware system.
Examples of these upgrades include a model upgrade from an N10
model to the N20 model, and physical memory capacity upgrades.