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File Access and Protocols Feature Guide 13

OceanStor 18500 V3 and 18800 V3 Mission Critical Storage System V300R003

This document describes the implementation principles and application scenarios of the NAS feature. Also, it explains how to configure and manage NAS.
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Application Scenarios

Application Scenarios

The NFS feature enables clients running a variety of operating systems to share files over a network. It applies to a wide range of network environments, including the non-domain environment, LDAP domain environment, and NIS domain environment.

NFS Share in a Non-Domain Environment

The NFS share in a non-domain environment is commonly used for small- and medium-sized enterprises. Figure 2-1 shows the networking. On the network, the storage system serves as the NFS server and employs the NFS protocol to provide shared file system access for clients. After the clients map the shared files to the local directories, users can access the files on the server in the same way as accessing local files. IP addresses are configured in the storage system for the clients that are allowed to access the shared file system.

Figure 2-1  NFS share in a non-domain environment

NFS Share in a Domain Environment

Domains enable accounts, applications, and networks to be centrally managed. In Linux, LDAP and NIS domains are available.

LDAP is an open, extendable network protocol. It is also becoming an important tool for network management with its user-friendly, secure, and powerful information query feature as well as its cross-platform data access capability. The purpose of LDAP-based authentication applications is to set up a directory-oriented user authentication system, specifically, an LDAP domain. When a client user needs to access applications in the LDAP domain environment, the LDAP server compares the user name and password sent by the client with corresponding authentication information in the directory database for identity verification.

NIS is a directory service technology that enables users to centrally manage system databases. It provides a yellow page function to support the centralized management of network information. NIS works based on client/server architecture. When the user name and password of a user are saved in the NIS server database, user can log in to an NIS client and maintain the database to centrally manage the network information on the LAN.

As shown in Figure 2-2, when a client needs to access an NFS share provided by the storage system in a domain environment, the storage system employs the domain server network group to authenticate the accessible IP address, ensuring the reliability of file system data.

Figure 2-2  NFS share in a domain environment


If LDAP/NIS domain authentication is used, ensure that the first two controllers of the storage system can communicate with the domain controller.

Updated: 2019-08-14

Document ID: EDOC1000084098

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