IBM z13s, Technical Manual

Page: 363 / 588

Chapter 8. System upgrades
335
As an example, for a z13s server with capacity identifier D02, you can used the following
methods to deliver a capacity upgrade through On/Off CoD:
򐂰 One option is to add CPs of the same capacity setting. With this option, the MCI can be
changed to a D03, which adds one extra CP (making a three-way configuration) or to a
D04, which adds two extra CPs (making a four-way configuration).
򐂰
Another option is to change to a separate capacity level of the current CPs, and change
the MCI to an E02 or to an F02. The capacity level of the CPs is increased, but no
additional CPs are added. The D02 can also be temporarily upgraded to an E03 as
indicated in the appendix pointer, increasing the capacity level and adding another
processor.
Use the Large Systems Performance Reference (LSPR) information to evaluate the capacity
requirements according to your workload type. LSPR data for current IBM processors is
available at the following website:
https://www.ibm.com/servers/resourcelink/lib03060.nsf/pages/lsprindex
The On/Off CoD hardware capacity is charged on a 24-hour basis. A grace period at the end
of the On/Off CoD day provides up to an hour after the 24-hour billing period to either change
the On/Off CoD configuration for the next 24-hour billing period, or deactivate the current
On/Off CoD configuration. The times when the capacity is activated and deactivated are
maintained in the z13s server and sent back to the support systems.
If On/Off capacity is already active, more On/Off capacity can be added without having to
return the z13s server to its original capacity. If the capacity is increased multiple times within
a 24-hour period, the charges apply to the highest amount of capacity active in the period.
If additional capacity is added from an already active record that contains capacity tokens, a
check is made to ensure that the resource in question has enough capacity to be active for an
entire billing window (24 hours). If that criteria is not met, no additional resources are
activated from the record.
If necessary, extra LPARs can be activated concurrently to use the newly added processor
resources.
To participate in this offering, you must have accepted contractual terms for purchasing
capacity through the Resource Link, established a profile, and installed an On/Off CoD
enablement feature on the z13s server. You can then concurrently install temporary capacity
up to the limits in On/Off CoD, and use it for up to 180 days.
Monitoring occurs through the z13s call-home facility, and an invoice is generated if the
capacity was enabled during the calendar month. The customer continues to be billed for use
of temporary capacity until the z13s server is returned to the original configuration. If the
On/Off CoD support is no longer needed, the enablement code should be removed.
On/Off CoD orders can be pre-staged in Resource Link to enable multiple optional
configurations. The pricing of the orders is done at the time of the order, and the pricing can
vary from quarter to quarter.
Planning: On/Off CoD provides a concurrent
hardware
upgrade, resulting in more enabled
processors available to a z13s configuration. Additional planning tasks are required for
nondisruptive
upgrades. For more information, see “Suggestions to avoid disruptive
upgrades” on page 353.