Apple Mac OS X Server System Imaging and Software Update Administration For Version 10.4 or Later Bedienungsanleitung PDF herunterladen (Seite 19)

Chapter 1 About System Imaging Administration 19

Property List File

The property list file (NBImageInfo.plist) stores image properties. The property list for

Mac OS X image files is described in the following table. Initial values in the

NBImageInfo.plist are set by System Image Utility and you usually don’t need to change

the property list file directly. Some values are set by Server Admin. If you need to edit a

property list file, however, you can use TextEdit or Property List Editor, which you can

find in the Utilities folder on the Mac OS X Server Administration Tools CD.

Mac OS X property list

Boot Server Discovery Protocol (BSDP)

NetBoot uses an Apple-developed protocol based on DHCP called Boot Server

Discovery Protocol (BSDP). This protocol provides a way of discovering NetBoot servers

on a network. NetBoot clients obtain their IP information from a DHCP server and their

NetBoot information from BSDP. BSDP offers built-in support for load balancing. See

“Performance and Load Balancing” on page 55.

Property Type Description

Architectures array An array of strings of the architectures the image supports.

BootFile String Name of boot ROM file: booter.

Index Integer 1–4095 indicates a local image unique to the server.

4096–65535 is a duplicate, identical image stored on multiple servers

for load balancing.

IsDefault Boolean True specifies this image file as the default boot image on the subnet.

IsEnabled Boolean Sets whether the image is available to NetBoot (or Network Image)

clients.

IsInstall Boolean True specifies a Network Install image; False specifies a NetBoot image.

Name String Name of the image as it appears in the Mac OS X Preferences pane.

RootPath String Specifies path to disk image on server, or the path to an image on

another server. See “Using Images Stored on Other Servers” on

page 20.

Type String NFS or HTTP.

SupportsDiskless Boolean True directs the NetBoot server to allocate space for the shadow files

needed by diskless clients.

Description String Arbitrary text describing the image.

Language String A code specifying the language to be used while booted from the

image.

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Apple Mac OS X Server System Imaging and Software Update Administration For Version 10.4 or Later Bedienungsanleitung Seite 19