Apple Mac OS X Server System Imaging and Software Update Administration For Version 10.4 or Later Bedienungsanleitung PDF herunterladen (Seite 24)

24 Chapter 1 About System Imaging Administration

Network Service Requirements

Depending on the types of clients you want to boot or install, your NetBoot server

must also provide the following supporting services.

Note: DHCP service is listed as optional because, although it is required for NetBoot, it

can be provided by a server other than the NetBoot server. Services marked “required”

must be running on the NetBoot server.

NetBoot and AirPort

The use of AirPort wireless technology to NetBoot clients is not supported by Apple

and is discouraged.

Capacity Planning

The number of NetBoot client computers your server can support depends on how

your server is configured, when your clients routinely start up, the server’s hard disk

space, and a number of other factors. When planning for your server and network

needs, consider these factors:

Â Ethernet speed: 100Base-T or faster connections are required for both client

computers and the server. As you add more clients, you may need to increase the

speed of your server’s Ethernet connections. Ideally you want to take advantage of

the Gigabit Ethernet capacity built in to your Mac OS X server hardware to connect

to a Gigabit switch. From the switch you should connect Gigabit Ethernet or 100-

Mbit Ethernet to each of the NetBoot clients.

Â Hard disk capacity and number of images: Boot and install images occupy hard disk

space on server volumes, depending on the size and configuration of the system

image , the number of images being stored, including architecture-specific images

that you need for Intel-based and PowerPC-based Macintosh clients. Images can be

distributed across multiple volumes or multiple servers. For more information, see

“Performance and Load Balancing” on page 55.

Â Hard disk capacity and number of users: If you have a large number of diskless clients,

consider adding a separate file server to your network to store temporary user

documents. Because the system software for a disk image is written to a shadow

image for each client booting from the disk image, you can get a rough estimate for

the required hard disk capacity required by multiplying the size of the shadow image

by the number of clients.

Service provided by

NetBoot Server

For booting Mac OS X computers

with hard disks

For booting Mac OS X computers

without hard disks

DHCP optional optional

NFS required if no HTTP required if no HTTP

AFP not required required

HTTP required if no NFS required if no NFS

TFTP required required

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