2.1 Introducing the IBM z142.2 The z142.3 z14 Technical Highlights2.4 z14 System Design2.5 Processor unit (PU) instances2.6 z14 Hardware models2.7 z14 Sub-capacity models2.8 z14 frames, drawers, and I/O2.9 Processor Drawers2.10 Single Chip Module (SCM)2.11 Processor Unit (PU)2.12 Memory2.13 Power and Cooling2.13.1 Power2.13.2 Cooling2.14 Upgrades2.14.1 Permanent upgrades2.14.2 Temporary upgrades2.14.3 Concurrent upgrades2.14.4 Customer Initiated Upgrade facility2.14.5 Capacity Backup2.14.6 Capacity for Planned Events (CPE)