EECS 1012 Lecture Notes - Lecture 13: Lightweight Directory Access Protocol, Netiq Edirectory, Remote Procedure Call
13 Jun 2018
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EECS 1012 Lecture 13 Notes
Introduction
Storage area networks
• In fact, if the mount procedure was performed by the system as part of the network
connection procedure, the user might not even be aware of which files and directories
are local and which are remote.
• The NFS client/server manager is built into the operating system kernel, and operates as
an alternative to the local file system manager, using the RPC (Remote Procedure Call)
protocol.
• A typical NFS connection is shown
• Linux and Macintosh OS X work similarly.
• To add a file system to a local directory tree, the user simply connects to a server and
identifies a local mount point.
• File systems of different types are handled automatically by the local system.
• More recently, steps have been taken to provide more generalized, distributed network
directory services.
• These would be used for locating other types of information, in addition to file services.
• Such generalized services could identify the configuration of a system or information
about employees in a business, for example.
• These systems are based on generalized naming schemes, such as the Internet Domain
Name Service, and are designed to locate files and information uniquely wherever the
information is located
• A standard protocol, LDAP (Lightweight Directory Access Protocol), exists for this
purpose.
• Two examples of generalized network directory services are Active Directory, supported
by Microsoft, and Novell Directory Services.
• Traditional network file access uses a client-server approach
• To access a file, a user client requests service from a file server.
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