Air Cleaner User Manual

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Chapter 13. Network Boot/Installation Configuration

The Sysback Network Boot/Install Configuration options create and configure a

host to provide boot and optional installation services to a client host over the

network.

The SysBack Network Boot functions use the BOOTP protocol to enable a client to

communicate with the boot server. The client sends a BOOTP request across the

network to a server. Then, the server, if configured, responds with the information

that the client needs to contact that server and, subsequently, access the network

boot image.

Once the client has successfully transferred the network boot image, the client uses

this image to boot into maintenance mode and display the System Backup &

Recovery for AIX Installation & Maintenance Main Menu.

Classic Network Boot and NIM Resource Boot

This section explains the differences between the Classic Network Boot and the

NIM Resource Boot.

Classic Boot

The SysBack Classic Network Boot method used in versions earlier than 5,

continues in Version 5 for environments that do not use AIX NIM (Network

Installation Manager) resources.

The Classic Network Boot method relies on the / and /usr filesystems of the boot

server for creating the network boot image. The boot server also fulfills other

processing requirements for the client during the boot/installation process.

Therefore, the boot server must meet certain requirements in order for the boot

client to successfully utilize the boot server’s resources. Specifically:

1. The operating system level of the boot server must be the same level as the

boot client when using SysBack only to boot into maintenance mode. (The

client must boot from the same level as what is currently installed.)

2. The operating system level of the boot server must be the same level as the

installation/restore image used to reinstall the client machine when booting

and installing the client. (The client must boot from the same level as the image

to be installed.)

3. The boot server must have installed any AIX filesets required for the client to

support attached hardware.

Note: If filesets are installed specifically to support a boot client, the server

must be rebooted, and the network boot image updated and recreated

before the client will successfully boot from the boot server.

4. The boot server must have installed kernel filesets to support the processor

type (uniprocessor or multiprocessor) of the boot client regardless of whether

or not the boot server is of the same processor type.

Note: If filesets are installed specifically to support a boot client, the server

must be rebooted and the network boot image updated or recreated

before the client can successfully boot from the boot server.