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Peripheral Configuration in Its Simplest Terms

1-4 Peripherals Configuration (R1001H) HP-UX version 11.00.01

Peripheral Configuration in Its Simplest

Terms

A peripheral device requires two or three configuration steps to communicate with

the HP-UX operating system: configure, install, and (if needed) reboot. Most

devices supported by Continuum systems do not need a system reboot to be

recognized by the system. Standard device drivers are already present in the

kernel.

1. Configure the device drivers into the kernel.

Device drivers are like translators that speak both the language of the

peripheral device and the language of the computer. The needed device

drivers for Stratus-qualified peripherals are already part of the kernel. In some

cases, you will have to run the addhardware command to associate the

device with its driver.

2. Install the hardware.

Perform any hardware-specific installation procedures required to physically

connect the peripheral device to your computer. Then, turn on the power to the

peripheral devices. For most peripherals associated with Continuum systems,

the HP-UX operating system will bring the device online through a process

known as hot-plugging, meaning that it is not necessary to turn off the power

to the system.

3. Reboot the system.

The HP-UX operating system automatically creates the necessary device

special files required for the peripheral, either through Stratus-specific

commands or upon system reboot. (For most peripherals associated with

Continuum systems, special commands must be entered, but rebooting is not

necessary.) Peripherals such as disk expansion cabinets require a reboot for the

HP-UX operating system to recognize them and cannot be added dynamically

to a running Continuum system. At least one device special file must exist for

the device driver to communicate with the peripheral device. Device special

files tell the HP-UX operating system which device driver to use, how to find

the peripheral device, and what special characteristics the peripheral device

employs.

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