6947ch06.fm Draft Document for Review April 7, 2004 6:15 pm
136 IBM eServer 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 requiredCompatibility 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.
CFICF
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
z990CSS 0Compatibility support NOT required Compatibility support required on all z990 logical partitionsz/OS 1.1 is not supported in the same Sysplex if any participating system is on a z990Sysplex supports systems on z990 and non-z990 processors, with and without the compatibility supportIf z990 CF LPAR id is equal or less than x' F, then compatibility code is not required on OS partitions running on non-z990 processor CF partition can be in any LCSSOS partitions on z990 must be in LCSS 0 and have 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 suppo rt required on all
non-z990 OS logical parti tions Compatibility suppo rt required on all
z990 OS logical partitions
OS partitions on z990 must be in LCSS 0 and have LPAR id equal to or less than x'F'CF partition can be in any LCSSIf z990 CF LPAR id is greater than x'F' then compatibility s upport is required on all non-z990 system images participat ing 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