Identifying server requirements
z/OS® V2R3 is supported on the following IBM Z® servers:
- IBM® z14™ (z14)
- IBM z13® (z13®)
- IBM z13s™ (z13s)
- IBM zEnterprise® EC12 (zEC12)
- IBM zEnterprise BC12 (zBC12)
z/OS
V2R3 is not supported on the following servers:
- IBM zEnterprise 196 (z196)
- IBM zEnterprise 114 (z114)
- IBM System z10® Enterprise Class (z10 EC)
- IBM System z10 Business Class (z10 BC)
- IBM System z9® Enterprise Class (z9 EC)
- IBM System z9 Business Class (z9 BC)
- IBM eServer™ zSeries 990 (z990)
- IBM eServer zSeries 890 (z890)
- IBM eServer zSeries 900 (z900)
- IBM eServer zSeries 800 (z800).
For IBM z14 models M01 through M05, z/OS
V2R3, z/OS V2R2, and z/OS V2R1 support up to 170 processors configurable as general purpose
processors (CPs), zIIPs, IFLs, ICFs, or optional SAPs. The sum of CPs and zIIPs configured in a
single z/OS LPAR cannot exceed:
- 170 on z/OS V2R1 or later in non-SMT mode
- 128 on z/OS V2R1 or later in SMT mode.
For the IBM z14 Model ZR1, z/OS V2R3, z/OS V2R2, and z/OS V2R1 support up to 30 processors configurable as CPs, zIIPs, IFLs, ICFs, or optional SAPs. The sum of CPs and zIIPs configured in a single z/OS LPAR cannot exceed 30 on z/OS V2R1 or later (in either SMT or non-SMT mode).
For the z13 and z13s™ servers, z/OS
V2R3, z/OS
V2R2, and z/OS V2R1 (with PTFs) support
the following maximum number of processors per LPAR:
- Up to 141 processors per LPAR, if the partition is IPLed in non-simultaneous multi-threading (non-SMT) mode.
- Up to 213 threads per LPAR, if the partition is IPLed in simultaneous multi-threading (SMT) mode.
For other IBM servers, z/OS supports:
- Up to 100 processors per LPAR on the zEC12.
Notes:
- z/OS V2R3 must be IPLed in z/Architecture® mode.
- The total number of processors that are defined in a z/OS LPAR is the sum of general purpose processors (CPs), zIIPs, IFLs, ICFs, or optional SAPs.
- The z14™, z13, and z13s servers do not support the IBM zEnterprise Application Assist Processor (zAAP).
- Coupling Facility Levels (CFLEVELs) have hardware and software requirements. For more information, see Coupling Facility Level (CFLEVEL) Considerations.