Legato NetWorker ClientPak and Storage Node Installation Guide

Chapter 3: Configuration

To enable and use the optional autochanger module with a NetWorker storage node for

MPE/iX, you must perform the following configuration tasks before you can configure

and enable the autochanger to work with NetWorker:

1. “Selecting SCSI Addresses for the Autochanger” on page 31

2. “Shutting Down the NetWorker Storage Node” on page 31

3. “Installing the Autochanger Hardware” on page 31

4. “Restarting the NetWorker Storage Node” on page 31

5. “Configuring Tape and Autochanger Devices on MPE/iX” on page 31

6. “Creating the Device Files Using the mknod Utility” on page 35

Selecting SCSI Addresses for the Autochanger

Use the ODE command and the run mapper command within ODE at the ISL prompt

during bootup to list the currently used SCSI addresses. Then set the device on the

autochanger (robotics) and the tape devices to use available SCSI addresses.

Shutting Down the NetWorker Storage Node

Before installing the autochanger device hardware, you should shut down your

system. Refer to the MPE/iX shutdown procedure in the HP MPE documentation.

Installing the Autochanger Hardware

To install the autochanger hardware, follow the instructions in the appropriate

hardware installation manuals, provided by your vendor.

Restarting the NetWorker Storage Node

After you install the autochanger device hardware, you should turn on the storage

node and autochanger in the following order:

1. Turn the main power switch of the autochanger to the “On” position.

2. Reboot the sever. Rebooting the servers is required after installing new

autochanger hardware.

Configuring Tape and Autochanger Devices on MPE/iX

An example of how to configure a DLT Library on an HP 3000 is used to illustrate how

to configure tape and autochanger devices on MPE/iX.

Note that the following example for configuring a DLT Library on an HP 3000 works

for connectivity and illustrates the driver binding, but is not optimized for

performance. The example has the entire library on a single differential bus, but for

performance no more than two drives should be on the same bus for concurrent

operations.