OSA channels

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OSA channels allow:
  • Direct connection of LANs using the Queued Direct I/O (QDIO) architecture
  • Connection of LANs using non-QDIO architectures
  • Direct connection of LANs using the Enhanced Queued Direct I/O (EQDIO) architecture
  • Attachment of TN3270E emulators for channels running the non-SNA DFT protocol (OSA-ICC)
  • Connection to TPF through 3215 data streams (OSA-ICC)
  • Communication between operating system images and a CCL image (OSA for NCP)
  • Connection to the intraensemble data network (OSA for zBX data network)
  • Connection to the intranode management network (OSA for zBX management)

All OSA-Express features through the OSA-Express3 feature support two channel paths being defined in IOCP. This is regardless of the number of ports on the feature, except for OSA-Express2 and OSA-Express3 10 Gigabit Ethernet, which supports only one channel path.

All OSA-Express4S features and later support a single channel path in IOCP regardless of the number of ports on the feature.

All Network Express features support two channel paths being defined in IOCP because each port on the feature is a distinct PCHID.