No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

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.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview

Overview

File Transfer Protocol (FTP) is one of the earliest protocols used by the Internet. It transfers files from one computer to another over the Internet.

Introduction to FTP Protocol

As network technologies continue to develop, increasing files must be shared to different users. Being one of the earliest file transfer protocols, FTP is widely used. FTP uses the Client/Server architecture. A client can send requests to a server for uploading, downloading, creating, and modifying a directory. When FTP is used, two connections are established between a client and a server.
  • The control connection is used to control data transfer. Generally, port 21 is used.
  • The data connection is used to transfer data between the client and server. Generally, port 20 is used.

OceanStor 18500 V3/18800 V3 storage system supports the FTP protocol. When the FTP service is enabled in the storage system, a client can use the FTP protocol to access shared files in the storage system.

Advantages of the FTP protocol are as follows:
  • The transfer speed is quick. The protocol is suitable for transferring large files. The transfer is faster as the file size increases.
  • The FTP protocol is easy to use. It masks computer system information and enables file transfer among different operating systems.
FTPS (FTP-SSL), an extension to the commonly used FTP, adds support for the TLS and the SSL cryptographic protocols. SSL is a protocol that provides data encryption and decryption during secure data transmission between a client and an SSL-based server. The FTPS protocol has two transfer modes:
  • Explicit

    Control connection uses port 21 by default and data connection uses port 20 by default.

  • Implicit

    Control connection uses port 990 by default and data connection uses port 989 by default.

File Exchange Protocol (FXP) is a protocol for transmitting files between servers. It controls file transmission between two FXP-based servers. In other words, FXP works when an FTP-based client controls two FTP-based servers between which files are transmitted.

(Applicable to V300R003C00 and V300R003C10) OceanStor 18500 V3/18800 V3 storage systems support FTP, and FXP.
NOTE:

If you need to use FXP, run the change service ftp fxp_enables=yes command on the CLI to enable FXP.

(Applicable to V300R003C20) OceanStor 18500 V3/18800 V3 storage systems support FTP, FTPS, and FXP.
NOTE:
  • The storage system provides the FTPS certificate by default. If you do not need the default certificate, export the certificate request file from the storage system, generate a new certificate file in the certificate server, and import it to the storage system.
  • If you need to use FXP, run the change service ftp fxp_enables=yes command on the CLI to enable FXP.

Related Concepts

Anonymous user: Indicates users who do not have specified accounts on FTP servers but can still access some public resources using their passwords. User name Anonymous is used to access FTP shares.

File system quota: A file system quota can restrict resource usage. There are three types of quotas: Directory quota, User quota, and User group quota.
  • Directory quota: Restricts the maximum available space or number of all files in a directory. The storage system supports the default directory quota. The default directory quota indicates a quota value that takes effect for all quota trees in a file system. After configured the default quota, if a directory quota is not configured for a newly created quota tree, the system enables the quota tree to use the default quota to restrict the available space and number of files.
  • User quota: Restricts the space or number of files that can be used by a user. The storage system supports the default user quota. The default user quota indicates a quota value that takes effect for all users in a file system or quota tree. After configured the default quota, if a user quota is not configured for a user, the system enables the user to use the default quota to restrict the available space and number of files.
  • User group quota: Restricts the space or number of files that can be used by a user group. The space or number of files used by all members in a user group cannot exceed the user group quota. The storage system supports the default user group quota. The default user group quota indicates a quota value that takes effect for all user groups in a file system or quota tree. After configured the default quota, if a user group quota is not configured for a user group, the system enables the user group to use the default quota to restrict the available space and number of files.
When a user or user group quota is configured, Root Quota Tree is used as the file system-level quota by default and the capacity and number of files in a file system are restricted with the exception of quota trees.
The following two quota types are involved in each preceding quota type.
  • Space Quota: maximum capacity of quota tree in a file system
  • File Quantity Quota: maximum number of files under quota tree in a file system
Translation
Download
Updated: 2019-08-14

Document ID: EDOC1000084098

Views: 30176

Downloads: 72

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next