Sometimes the namespace of a client can become too complicated or overwhelmed

with information. The unmount command is an easy way to slowly disengage from the server one ®le system at a time. To unmount all ®le systems, specify the*ALL

value for the TYPE parameter on the UNMOUNT or RMVMFS (Remove Mounted File System) commands.

For detailed information on how to mount and unmount ®le systems, see ªADDMFS (Add Mounted File System) Commandº on page 45 and ªRMVMFS (Remove Mounted File System) Commandº on page 48.

What File Systems Can I Mount?

Users can mount three different types of ®le systems on AS/400:

Network File Systems

Despite the fact that users will mount most ®le systems at startup time, there may be a need to dynamically mount and unmount ®le systems. Remote ®le systems exported by the server can be mounted at any time, assuming the local client has appropriate access authorities.

User-De®ned File Systems

On AS/400, a UDFS is a local object that is visible as an opaque object in the integrated ®le system namespace. The contents of a UDFS are accessible only when it has been mounted within the integrated ®le system namespace. Although UDFSs can be mounted at the time of startup, users can dynamically mount and unmount a UDFS at any time.

Novell** NetWare** ®le systems

Users may also dynamically mount and unmount NetWare ®le systems. To learn more about NetWare ®le systems, see

vOS/400 NetWare Integration Support, SC41-4124

vIntegrated File System Introduction, SC41-4711

Where Can I Mount File Systems?

It is possible to mount an NFS ®le system over all or part of another client ®le system. This is possible because the directories used as mount points appear the same no matter where they actually reside.

To the client, NFS ®le systems appear to be and function as ªnormal,º local ®le systems. Users can mount network ®le systems over the following AS/400 client ®le systems:

vªRootº (though not over the root directory itself)

vQOpenSys

vNFS

vUDFS

When a client mounts an exported ®le system, the newly mounted ®le system will cover up whatever is beneath it. This is true for mounting remote ®le systems over local directories as well as mounting remote ®le systems over previously-mounted remote ®le systems. Any ®le system that is covered up in such a manner is inaccessible until all of the ®le systems ªon topº are unmounted.

42OS/400 Network File System Support V4R4

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AS/400E specifications

The IBM AS/400E, now more commonly known as IBM i, is a robust and versatile midrange server that has been designed to provide a comprehensive computing solution for businesses of all sizes. First introduced in the late 1980s, the AS/400 series has undergone multiple enhancements and rebranding, with the AS/400E being one of the notable iterations. This powerful platform is closely associated with IBM's commitment to reliability, scalability, and integrated business solutions.

One of the main features of the AS/400E is its highly integrated architecture that combines hardware and software into a cohesive system. This integration allows for seamless operations, reducing the complexity typically associated with managing disparate systems. The system is powered by IBM's proprietary OS/400 operating system, which has evolved into IBM i, featuring advanced capabilities like object-oriented programming, integrated database management, and security features that are essential for enterprise environments.

A key characteristic of the AS/400E is its robust database support, primarily through the use of DB2 for i. This integrated database management system enables efficient data handling and retrieval, facilitating real-time business analytics and reporting. Furthermore, the platform supports a variety of programming languages, including RPG, COBOL, and Java, making it flexible for developers who require diverse tools for application development.

The AS/400E is also known for its exceptional reliability and uptime, making it a preferred choice for critical business applications in industries such as finance, healthcare, and manufacturing. This reliability is backed by advanced error detection and correction mechanisms, as well as redundancy features that help prevent data loss and minimize downtime.

In terms of scalability, the AS/400E can effortlessly expand to accommodate growing business demands. Organizations can increase processing power by adding more resources without significant disruption. This scalability, combined with the system’s built-in virtualization capabilities, allows businesses to optimize resource usage and streamline operations.

Security is another defining feature of the AS/400E. The platform incorporates various layers of security measures, including user authentication, encryption, and comprehensive auditing capabilities, ensuring that sensitive business data is protected against unauthorized access.

Overall, the IBM AS/400E remains a powerful tool in the enterprise computing landscape, providing businesses with an integrated, reliable, and secure solution for their technological needs. Its enduring popularity is a testament to its capability to evolve with changing business requirements while maintaining its core attributes of high performance and stability.
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