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Chapter 1 Mac OS X Server in Action 25
• Network Address Translation (NAT) service lets employees share a single Internet
connection. NAT converts all client IP addresses to one IP address for Internet
communications.
Computational Clustering
Clusters of Xserves offer a high-performance, cost-effective approach to the
computationally intensive processing needed for genetic research, video production,
or other high-bandwidth computing.
• One Xserve in a rack is usually set up as a master computer, called the head node. The
head node runs NetBoot and Network Install and hosts directory services and other
shared facilities for other computers in the rack, which are used for data processing
and numerical computations.
• The head node is also likely to be set up as an AFP and NFS file server and
implement an IP firewall that protects access to the cluster by unauthorized users.
• Scientists, videographers, and other application users work at Mac OS X computers to
remotely configure and monitor applications and databases residing on the Xserves.
• Mac OS X Server offers scientists and researchers familiar UNIX utilities, shells,
scripting languages, and compilers for building specialized software. A full suite of
developer tools comes with Mac OS X Server, including the gcc command-line
compiler and a development tool called Project Builder.
Applications
Server
administration
Application databases
and computational engines
NetBoot, Network Install,
directory and file services,
firewall service
LL2343.Book Page 25 Thursday, August 14, 2003 5:12 PM