Adding my 2 cents worth:

Within the Capcity on Demand (CoD) offering for Z, there are a number of 
options available for different types of situations. Some have already been 
mentioned. A couple of useful docs:

  1.  IBM Redbook. Capacity on Demand SG24-7504. Almost 10 years old. Apart 
from some 'enhancements' to the offering (mainly to do with pricing/maintenance 
charges and entitlement to carry foward 'options' when upgrading to a newer Z 
system) and adding of the System Recovery Boost (SRB) option for the z15, the 
main content is still relevant.
  2.  zSystem Capacity On Demand User’s Guide  -  SC28-6943

All the CoD options i.e. CBU, CIU, CPE, On/Off CoD and SRB have T&Cs. Key point 
about the contracts is that some may be localised for an individual country. In 
addition, different CoD records have different time limits/expiration dates.

Some additional points:

  1.  Its a given that to activate the additional capacity, the physical 
resource is already available in the system.
  2.  CPE has been mentioned. CPE is temporary access to capacity intended to 
replace capacity lost within the enterprise due to a planned event such as a 
facility upgrade or system relocation. CPE is similar to CBU in that it is 
intended to replace lost capacity; however, it differs in its scope and intent. 
Where CBU addresses disaster recovery scenarios that can take up to three 
months to remedy, CPE is intended for short-duration events lasting up to three 
days, maximum.
  3.  On/Off CoD. On/Off CoD is available for up to twice the ‘purchased’ 
capacity of a given machine.  On/Off CoD upgrades are allowed for any processor 
configuration, up to the limit, as long as the number or capacity level of the 
processors is increased.  Upgrades that decrease the number or the capacity 
level of processors is not allowed.

In his response below, Tim mentions Instant Recovery. This is the same as 
System Recovery Boost (SRB). A few poinst about this option:

  1.  The name can be bit mis-leading. The 'instant' applies to the capability 
of ACTIVATING additional CAPACITY during/after an IPL - planned or unplanned..
  2.  This is limited to a short duration i.e. minutes/hours rather than days!
  3.  Some the documentation states 'speed'. Remember, this refers to the 
'speed' of bringing down/up of the OS and sub-systems. This is done by 
ACTIVATING ADDITIONAL capacity and not by changing the GHz of the processor.

Regards

Parwez Hamid​

________________________________
From: IBM Mainframe Discussion List <[email protected]> on behalf of 
Timothy Sipples <[email protected]>
Sent: 28 November 2019 09:14
To: [email protected] <[email protected]>
Subject: Re: OOCoD experiences?

Jerry Whitteridge wrote:
>We looked at this before I moved to IBM and had
>to rule it out as the Hardware side only bills you
>for the Capacity by the day activated (e.g. Use OOCoD
>for 7 days and get charged for the 7 days at higher
>capacity) BUT software is billed by the month so you
>get the full month at the higher capacity even if you
>only turned on OOCoD for an hour.

First of all, what you describe was never true, not the way you describe it
anyway.

1. Sub-capacity Monthly License Charge (MLC) IBM software was/is based on
the monthly peak *four* hour rolling average (4HRA). A *one hour* OOCoD
activation is not four hours, so it was/is mathematically impossible for
your MLC to report a 4HRA equal to or even particularly near the total MSU
capacity inclusive of the one hour OOCoD activation.

2. "One-Time Charge" (OTC) IBM software, a.k.a. IPLA software, allows daily
OOCoD pricing -- "per MSU day."

3. You were/are also allowed to set softcapping on machines across OOCoD
activation(s), and with some potential "white space" (free) capacity
utilization. Sub-capacity reports will never report above the softcap(s).

Laurence Chiu wrote:

>I think there might be a software deal in the mix also based
>on Tailor Fit Pricing but it's good to know all the ramifications.

Yes, that's right. With Tailored Fit Pricing peak MSUs (4HRA or otherwise)
no longer matter as such.

There's also now Instant Recovery on IBM z15 machines, with z/OS System
Recovery Boost. There is no software reported capacity associated with
legal/valid z/OS System Recovery Boost(s).

>CBU won't work because the site is out of country.

Does your workload qualify for Capacity for Planned Events (CPE), and are
CPE's T&C compatible with cross-border requirements?

--------------------------------------------------------------------------------------------------------
Timothy Sipples
IT Architect Executive, Industry Solutions, IBM Z & LinuxONE
--------------------------------------------------------------------------------------------------------

E-Mail: [email protected]

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