September 2002
Intermediate to advanced
332 pages
11h 1m
English
Content preview from IBM eServer zSeries 900 Technical Guide
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Chapter 1. zSeries 900 overview 13
1.4 Concurrent upgrades
The z900 servers have concurrent upgrades capability via the Capacity Upgrade on Demand
(CUoD) function. This function is also used by Customer Initiated Upgrades (CIUs) and by the
Capacity BackUp (CBU) feature implementation.
Capacity Upgrade on Demand
Capacity Upgrade on Demand offers server upgrades via Licensed Internal Code (LIC)
enabling. CUoD can concurrently add processors (CPs, IFLs or ICFs), memory, and channel
cards to an existing configuration, when no hardware changes are required, resulting on an
upgraded server.
Adequate planning is required to exploit this function. Proper MCM type and memory card
sizes must be used, and the Plan Ahead feature with concurrent conditioning ...
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