Processor Characteristics
Table 1
shows all logical partitions, required characterized PUs, and operating
systems, and which PU characterizations can be configured to a logical
partition image. The available combinations of dedicated (DED) and
shared (SHR) processors are also shown. For all combinations, a logical
partition can also have reserved processors defined, allowing nondisruptive
logical partition upgrades.
| Logical partition mode | PU type | Operating systems | PUs usage |
|---|---|---|---|
| General | CPs | z/Architecture operating systems | CPs DED or CPs SHR |
| CPs or zIIPs | z/OS | CPs DED and optionally zIIPs DED or CPs SHR and optionally zIIPs SHR | |
| General | CPs | z/TPF | CPs DED or CPs SHR |
| CPs | 21CS VSEn® | CPs DED or CPs SHR | |
| Coupling facility | ICFs or CPs | CFCC | ICFs DED or ICFs SHR, or CPs SHR |
| Linux® only | IFLs or CPs | Linux z/VM | IFLs DED or IFLs SHR, or CPs DED or CPs SHR |
| z/VM® | CPs, IFLs, zIIPs ICFs | z/VM | All PUs must be either SHR or DED |
| SSC | CPs, IFLs | SSC | IFLs DED or IFLs SHR, or CPs DED or CPs SHR |