QIO Configuration and Management Manual

Introduction to QIO

QIO Configuration and Management Manual—424717-008

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QIO Subsystem Requirements

This subsection describes the NonStop S-series servers, Integrity NonStop NS-series

servers, and LAN adapters supported by the QIO subsystem.

Servers Supported

The QIO subsystem is supported on all NonStop S-series servers and on Integrity

NonStop NS-series servers, that are shipped with a generic preconfiguration of the

QIO subsystem.

ServerNet LAN Systems Access (SLSA) Subsystem

The SLSA subsystem provides an architecture that supports parallel local area network

input-output (LAN I/O) in a system based on the ServerNet architecture. This

architecture allows NonStop S-series servers and Integrity NonStop NS-series servers

to communicate across a ServerNet system area network (ServerNet SAN) and access

communication adapters through various LAN protocols.

The SLSA subsystem uses the shared memory segment provided by the QIO

subsystem to move the ownership of data between processes. The subsystem also

uses QIO-based DIHs to communicate to the appropriate adapter type over the

ServerNet LAN. A driver exists for each ServerNet adapter and as a set of system

library routines accessible by each process that must use the SLSA subsystem.

Currently, the only adapters supported are:



MFIOB (in the PMF CRU)



ATM 3 ServerNet adapter (ATM3SA)



Ethernet 4-port ServerNet adapter (E4SA)



Common Communication ServerNet adapter (CCSA)



Fast Ethernet ServerNet adapter (FESA)



Gigabit Ethernet ServerNet adapter (GESA)



Token-Ring ServerNet adapter (TRSA)

For more information about LAN adapters, see the LAN Configuration and

Management Manual.

Configuration and Management Tools

Software tools help you configure and manage the QIO subsystem as described in the

following subsections