Capacity Backup - IBM z13s Technical Manual

8.7 Capacity BackUp

CBU provides reserved emergency backup processor capacity for unplanned situations in
which capacity is lost in another part of your enterprise, and you want to recover by adding
the reserved capacity on a designated z13s server.
CBU is the quick, temporary activation of PUs, and is available in the following durations:
For up to 90 consecutive days, in a loss of processing capacity as a result of an
emergency or disaster recovery situation
For 10 days for testing your disaster recovery procedures
Important: CBU is for disaster and recovery purposes only, and
workload management or for a planned event.
8.7.1 Ordering
The CBU process enables CBU to activate CPs, ICFs, zAAPs, zIIPs, IFLs, and SAPs. To be
able to use the CBU process, a CBU enablement feature (FC 9910) must be ordered and
installed. You must order the quantity and type of PUs that you require. CBU has these
feature codes:
FC 9910: CBU enablement
FC 6805: Additional test activations
FC 6817: Total CBU years ordered
FC 6818: CBU records ordered
FC 6820: Single CBU CP-year
FC 6821: 25 CBU CP-year
FC 6822: Single CBU IFL-year
FC 6823: 25 CBU IFL-year
FC 6824: Single CBU ICF-year
FC 6825: 25 CBU ICF-year
FC 6826: Single CBU zAAP-year
FC 6827: 25 CBU zAAP-year
FC 6828: Single CBU zIIP-year
FC 6829: 25 CBU zIIP-year
FC 6830: Single CBU SAP-year
FC 6831: 25 CBU SAP-year
FC 6832: CBU replenishment
The CBU entitlement record (FC 6818) contains an expiration date that is established at the
time of order, and depends upon the quantity of CBU years (FC 6817). You can extend your
CBU entitlements through the purchase of more CBU years. The number of FC 6817 per
instance of FC 6818 remains limited to five, and fractional years are rounded up to the
nearest whole integer when calculating this limit.
For instance, if you have two years and eight months to the expiration date at the time of
order, the expiration date can be extended by no more than two additional years. One test
activation is provided for each additional CBU year added to the CBU entitlement record.
Feature code 6805 enables ordering additional tests in increments of one. The total number
of tests that are supported is 15 for each feature code 6818.
cannot
be used for peak
Chapter 8. System upgrades
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