IOCP
Input/Output Configuration Program
Enhanced Definition
Utility used to define I/O configuration for mainframe systems, generating IOCDS (I/O Configuration Data Set) that describes hardware configuration to the operating system.
Key Characteristics
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- Hardware configuration definition
- IOCDS generation
- Configuration validation
- Multiple configuration support
- Documentation generation
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IOCP Statements:
- ID: Configuration identification
- RESOURCE: Processor definition
- CHPID: Channel path identification
- CNTLUNIT: Control unit definition
- IODEVICE: Device definition
- IOPATH: Path connections
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Configuration Process:1. Define processors and channels 2. Define control units 3. Define devices 4. Specify connectivity 5. Validate configuration 6. Generate IOCDS 7. Activate configuration
Use Cases
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- Initial system configuration
- Adding new devices
- Modifying I/O paths
- Disaster recovery setup
- System upgrades
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