IBM 990 - Manual (Page 148)

136 IBM
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zSeries 990 Technical Guide
Figure 6-1 Conditions where compatibility maintenance is not required
Figure 6-2 shows the situation where the Compatibility Support is required.
Figure 6-2 Conditions where compatibility maintenance is required
Compatibility Support restrictions
Compatibility Support does not allow you to make full use of all the capabilities of the z990.
Some restrictions that apply when running in this mode are:
z/OS with Compatibility Support must be IPLed in a partition defined to LCSS 0. If it is
IPLd in a partition in another LCSS, it will terminate with a 07C-01 wait state.
CF
ICF
OS/390
R10
z/OS
1.2
z/OS
1.4
z/VM
G5, G6, z800, or z900
z/OS
1.3
ICF
LPAR id
<= F
OS/390
R10
Compat
z/VM
Compat
z990
CSS 0
Compatibility support NOT required Compatibility support required on all z990
logical partitions
z/OS 1.1 is not supported in the same Sysplex
if any participating system is on a z990.
Sysplex supports systems on z990 and
non-z990 processors, with and without the
compatibility support. If the z990 CF LPAR ID is equal or less than x'
F, then compatibility code is not required on OS
partitions running on a non-z990 processor .
The CF partition can be in any LCSS.
OS partitions on z990 must be in LCSS 0 and
have an LPAR ID equal or less than x'F'.
z/OS
V1R2
Compat
z/OS
V1R3
Compat
z/OS
V1R4
Compat
CF
ICF
OS/390
R10
Compat
z/OS
1.2
Compat
z/VM
Compat
G5, G6, z800, or z900
ICF
LPAR id
> F
OS/390
R10
Compat
z/VM
Compat
z990
CSS 0
Compatibility support required on all
non-z990 OS logical partitions
Compatibility support required on all
z990 OS logical partitions
OS partitions on z990 must be in LCSS 0
and have an LPAR ID equal to or less than
x'F'.
The CF partition can be in any LCSS. If the z990 CF LPAR ID is greater than
x'F', then compatibility support is required
on all non-z990 system images
participating in the SYSPLEX.
z/OS
1.2
Compat
z/OS
1.2
Compat
z/OS
1.2
Compat
z/OS
1.3
Compat
z/OS
1.4
Compat