192 IBM ^ zSeries 990 Technical Guide
additional CPs, IFLs, ICFs, and zAAPs in the upgrade, additional book(s) may be required
and can be concurrently installed before the LIC-CC enablement.
Figure 8-1 is an example of CUoD for processors, showing the eight PUs per book that can
be assigned as CPs, IFLs, ICFs, or zAAPs.
Figure 8-1 CUoD for processor example
An initial z990 server 2084-A08 (one book), software model 304 (four CPs) is concurrently
upgraded to a 2084-B16 (two books), software model 309 (nine CPs). The model upgrade
requires adding a book and assigning and activating five PUs as CPs.
Then the 2084-B16, software model 309, is concurrently upgraded to a software model 310
(10 CPs) with two IFLs by assigning and activating three more spare PUs (one as CP and two
as IFLs).
Additional logical processors can be concurrently configured online to logical partitions by the
operating system when reserved processors are previously defined, resulting in image
Note: The sum of CPs, unassigned CPs, IFLs, unassigned IFLs, ICFs, and zAAPs cannot
exceed eight PUs per book. The number of zAAPs cannot exceed four zAAPs per book.
The total number of zAAPs cannot exceed the number of CPs plus unassigned CPs on a
z990 server.
Important: CUoD for processors is not supported when CBU or On/Off CoD is activated
on a z990 server. CUoD for processors can be applied after the temporary capacity
upgrade via CBU or On/Off CoD is deactivated.
CUoD
+ 5 CPs
(+ 1 Book)
2084-A08 Model 304
4 CPs
CP0 CP1 CP2 CP3
Spare SpareSpare Spare
Book 0
2084-B16 Model 309
9 CPs
CP0 CP1 CP2 CP3
Book 0
CP8
Spare SpareSpare Spare
CP4 CP5 CP6 CP7
Spare Spare
Book 1
2084-B16 Model 310
10 CPs
2 IFLs
CP0 CP1 CP2 CP3
Book 0
CP8 CP9
Spare Spare
CP4 CP5 CP6 CP7
Spare
Book 1
Spare
Spare
IFL0IFL1
CUoD
+ 1 CP
+ 2 IFLs
