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Basic Storage Service Configuration Guide for File

OceanStor V3 Series V300R006

This document is applicable to OceanStor 2200 V3, 2600 V3, 5300 V3, 5500 V3, 5600 V3, 5800 V3, 6800 V3, 18500 V3, and 18800 V3. It describes the basic storage services and explains how to configure and manage them.
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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).
CIFS Feature

CIFS Feature

This section describes the concepts, license requirements, applicable products, restrictions, and application scenarios of the CIFS feature.

Overview

CIFS is a protocol used for sharing network files. CIFS allows Windows clients on the Internet and intranet to access shared files and other resources.

Introduction to CIFS

Server Message Block (SMB) is a protocol used for network file access and CIFS is a public version of SMB. SMB allows a local PC to access files and request services on PCs over the local area network (LAN).

Storage systems support SMB 1.0, SMB 2.0, SMB 2.1, and SMB 3.0. Storage systems are adaptive to protocol versions according to Windows OSs running on clients.

  • If a client runs Windows Server 2003 or Windows XP, SMB 1.0 is used.
  • If a client runs Windows Server 2008 or Windows Vista, SMB 2.0 is used.
  • If a client runs Windows Server 2008 R2 or Windows 7, SMB 2.1 is used.
  • If a client runs Windows Server 2012 or Windows 8, SMB 3.0 is used.
NOTE:
  • The SMB 1.0 service is disabled by default for V300R006C10 and later versions. If a client runs Windows Server 2003 or Windows XP, you must run the change service cifs smb1_enable=yes command on the storage system to enable the SMB 1.0 service. You can run the show service cifs command to query whether the SMB 1.0 service is enabled.
  • SMB 1.0, limited by its own mechanisms, cannot ensure service continuity during online upgrade.
  • If a client supports multiple versions of SMB, it is recommended that you select a higher version to ensure higher security.

The CIFS feature allows Windows clients to identify and access shared resources provided by a storage system. With CIFS, clients can quickly read, write, and create files in a storage system as on local PCs.

Related Concepts

Homedir: one of CIFS share modes. Homedir shares a file system to a specific user as a private directory. Different from common CIFS shares, when accessing a Homedir share, a user accesses a private directory. In V300R006C10 and later versions, Homedir shares can be created (including share permission setting and feature enabling/disabling), queried, modified, and deleted like common CIFS shares.

License Requirements and Compatible Products

This section describes the license requirements, compatible products, and specifications of CIFS.

License Requirements

The CIFS feature requires a license.

NOTE:

For details about the license, see "Software Specifications" in the product description specific to your product model. To obtain a license, contact your local Huawei representative office or Huawei authorized distributor.

Compatible Products

Product Series

Product Model

Product Version

OceanStor 2000 V3 series

OceanStor 2200 V3 (16 GB memory per controller) and 2600 V3

V300R006

OceanStor 5000 V3 series

OceanStor 5300 V3, 5500 V3, 5600 V3, and 5800 V3

V300R006

OceanStor 6000 V3 series

OceanStor 6800 V3

V300R006

OceanStor 18000 V3 series

OceanStor 18500 V3 and 18800 V3

V300R006

Specifications

Specifications vary with product models. For details about the specifications, see the product description specific to your product model.

Impact and Restrictions

This section describes the CIFS feature in terms of supported protocol versions, network requirements, dependency on other features, and impact on system performance.

Supported Protocol Versions

Storage systems support SMB 1.0, SMB 2.0, SMB 2.1, and SMB 3.0.

Network Requirements

The CIFS feature supports both IPv4 and IPv6 network access protocols.

Interaction with Other Features

Table 1-6 describes the relationship between the CIFS feature and other features.

Table 1-6 Relationship between the CIFS feature and other features

Feature

Relationship

File system snapshot

Before accessing snapshots of a file system, you must create a CIFS share for the file system.

NFS/FTP/HTTP

  • In multi-protocol sharing mode, you are advised to use the byte range lock to exclusively access a file in a file system to prevent file data overwriting or loss and ensure shared data consistency.
  • The software that is tightly coupled (audit logs, NT encryption, NT compression, void files, and symbol connections) with New Technology File System (NTFS) is not supported.
System Impact

File systems can be shared in NFS, CIFS, FTP, and HTTP modes at the same time. When clients concurrently access a file system using different protocols, the overall performance deteriorates slightly.

Compatibility

Verify that clients' operating systems are compatible with the storage system. You can query the compatibility using the Huawei Storage Interoperability Navigator.

Application Scenarios

The CIFS share feature is primarily used by Windows clients to share files in a non-domain or AD domain environment.

CIFS Share in a Non-Domain Environment

A storage system can employ CIFS shares to share file systems as directories to users. Users can only view or access their own shared directories.

As shown in Figure 1-8, a storage system serves as a CIFS server and employs the CIFS 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 as if they are accessing local files. You can set locally authenticated user names and passwords in the storage system to determine the local authentication information that can be used for accessing the file system.

Figure 1-8 CIFS share in a non-domain environment
CIFS Share in an AD Domain Environment

With the expansion of LANs and WANs, many enterprises use AD domains to manage Windows-based networks, simplifying network management and improving network scalability.

A storage system can be added to an AD domain as a client, thereby being seamlessly integrated with the AD domain. An AD domain controller saves information about all the clients and groups in the domain. The AD domain controller authenticates clients which request access to CIFS shares provided by the storage system. AD domain users can implement file-specific permission management. Different clients have different permissions for each shared directory. A client in an AD domain can only access the shared directory with the same name as the client.

Figure 1-9 CIFS share in an AD domain environment
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Updated: 2019-07-12

Document ID: EDOC1000138856

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