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6.2.2.5. Minimum IBM Z system requirements

You can install OpenShift Container Platform version 4.5 on the following IBM hardware:

  • IBM Z: z13, z13s, all z14 models, all z15 models
  • LinuxONE: all models
Hardware requirements
  • 1 LPAR with 3 IFLs that supports SMT2
  • 1 OSA or RoCE network adapter
Operating system requirements
  • One instance of z/VM 7.1

On your z/VM instance, set up:

  • 3 guest virtual machines for OpenShift Container Platform control plane machines
  • 2 guest virtual machines for OpenShift Container Platform compute machines
  • 1 guest virtual machine for the temporary OpenShift Container Platform bootstrap machine
Disk storage for the z/VM guest virtual machines
  • FICON attached disk storage (DASDs). These can be z/VM minidisks, fullpack minidisks, or dedicated DASDs, all of which must be formatted as CDL, which is the default. To reach the minimum required DASD size for Red Hat Enterprise Linux CoreOS (RHCOS) installations, you need extended address volumes (EAV). If available, use HyperPAV to ensure optimal performance.
  • FCP attached disk storage
Storage / Main Memory
  • 16 GB for OpenShift Container Platform control plane machines
  • 8 GB for OpenShift Container Platform compute machines
  • 16 GB for the temporary OpenShift Container Platform bootstrap machine