product introduction - support.huaweicloud.com file3 advantages obs has the following advantages:...

Object Storage Service

Product Introduction

Issue 18

Date 2019-01-29

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2019. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respectiveholders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees orrepresentations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Issue 18 (2019-01-29) Copyright © Huawei Technologies Co., Ltd. i

Contents

1 Overview......................................................................................................................................... 1

2 Introduction to Dedicated OBS.................................................................................................. 2

3 Advantages......................................................................................................................................3

4 Basic Concepts................................................................................................................................44.1 Object..............................................................................................................................................................................44.2 Bucket.............................................................................................................................................................................44.3 AK and SK......................................................................................................................................................................54.4 Region.............................................................................................................................................................................6

5 Using OBS.......................................................................................................................................7

6 User Permissions........................................................................................................................... 9

7 Application Scenarios.................................................................................................................12

8 Related Services........................................................................................................................... 16

9 Documentation Guide................................................................................................................ 20

10 Change History.......................................................................................................................... 22

Object Storage ServiceProduct Introduction Contents

Issue 18 (2019-01-29) Copyright © Huawei Technologies Co., Ltd. ii

1 Overview

Object Storage Service (OBS) is a stable, secure, efficient, and easy-to-use cloud storageservice. It provides highly reliable storage capabilities at relatively low costs.

OBS provides highly scalable storage capacity that can store all file types and is suitable forwebsites, enterprises, developers, and common subscribers. As a web service, OBS supportsAPIs over Hypertext Transfer Protocol (HTTP) and Hypertext Transfer Protocol Secure(HTTPS). With either OBS Console or OBS clients, you can access and manage data stored inOBS from any computer connected to the Internet anytime, anywhere. OBS supports RESTAPIs. It enables users to easily manage data stored in OBS and develop upper-layer serviceapplications as needed.

OBS provides the Image Processing feature, offering capabilities for image cropping,resizing, watermarking, and format conversion. Image Processing is stable, secure, efficient,cost-effective, and easy-to-use. For details about Image Processing, see the Image ProcessingFeature Guide.

Cloud services allow infrastructures to be deployed in multiple regions and deliver flexibleexpansion and enhanced reliability. Users can deploy OBS in specific areas to obtain fastaccess speeds at an affordable price.

Object Storage ServiceProduct Introduction 1 Overview

Issue 18 (2019-01-29) Copyright © Huawei Technologies Co., Ltd. 1

https://www.huaweicloud.com/en-us/product/obs.html

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2 Introduction to Dedicated OBS

Dedicated Cloud (DeC) is an integrated solution that provides computing, storage resourcepools, networks, and multi-level control and isolation for enterprises, governments, andfinance customers. With DeC, tenants can have exclusive resource pools that are physicallyisolated from the public resources. DeC aims to meet specific customer requirements onperformance, security, and compliance, providing customers with the "first-class" experiencein the cloud.

Customers can apply for DeC resources offline. For details, consult our customer servicepersonnel.

Dedicated OBS is a resource under DeC. It can provide customers with exclusive physicalhosts to meet higher requirements on isolation, security, and performance.

Figure 2-1 Dedicated OBS

Object Storage ServiceProduct Introduction 2 Introduction to Dedicated OBS


3 Advantages

OBS has the following advantages:

Reliable data durability and service continuity: OBS is used by the Huawei Cloud Albumfor mobile phones, and able to support the access by hundreds of millions of users. Deviceand data redundancy within each availability zone (AZ) and data disaster recovery across AZshelp deliver a data durability of 99.999999999% (11 nines) and a service continuity of99.99%, far higher than those of conventional storage.

Multi-level protection and authorization management: OBS has passed the Trusted CloudService (TRUCS) certification. The multiple data protection mechanisms, includingversioning, server-side encryption, uniform resource locator (URL) validation, virtual privatecloud (VPC)-based network isolation, access log audit, and fine-grained permission control,ensure data security persistently.

Intelligent scheduling for smooth data access: With intelligent scheduling and response,OBS optimizes data access experiences. Transfer acceleration, event notification, and BigData–oriented optimization further improve user experiences on the basis of massiveconcurrency, large bandwidth, and minimized latencies.

Easy to use and manage: OBS supports REST APIs, multi-language SDKs, and datamigration tools, allowing rapid service rollout in the cloud. You do not need to plan storagecapacity in advance. Storage resources are scalable automatically, relieving you of worriesabout resource expansion or reduction.

Two charging options: OBS offers the pay-per-use and monthly/yearly billing modes. Datain each of the Standard, Infrequent Access, and Archive storage classes can be metered andcharged independently, reducing storage costs.

Object Storage ServiceProduct Introduction 3 Advantages


4 Basic Concepts

4.1 ObjectObjects are basic units stored in OBS. It contains both data and the metadata that describesdata attributes. Data uploaded to OBS is stored in buckets as objects.

An object consists of data, metadata, and a key.l A key specifies the name of an object. An object key is a string ranging from 1 to 1024

characters in UTF-8 format. Each object is uniquely identified by a key within a bucket.l Metadata: Metadata provides descriptions about objects, which contains system metadata

and custom metadata. The metadata is a set of key-value pairs that are assigned toobjects stored in OBS.– System metadata is automatically assigned by OBS for managing objects. System

metadata including Date, Content-Length, Last-Modified, Content-MD5, and more.– Custom metadata is specified by users to describe objects when the objects are

uploaded to OBS.l Data is the content contained by an object.

Generally, objects are managed as files. However, OBS is an object-based storage service andit does not involve the file and folder concepts. For easy data management, OBS provides amethod to simulate virtual folders. By adding a slash (/) in an object name, for example, test/123.jpg, you can simulate test as a folder and 123.jpg as the name of a file in the test folder.However, the key of the object remains test/123.jpg.

When uploading an object, you can set a storage class for the object. If no storage class isspecified, the object is stored in the same storage class as the bucket where it resides. You canalso change the storage class of an existing object in a bucket.

On OBS Console or OBS clients, you can use folders the same way as they are used in a filesystem.

4.2 BucketBuckets are containers that store objects in OBS. OBS provides flat storage in the form ofbuckets and objects. Unlike the conventional multi-layer directory structure of file systems,all objects in a bucket are stored at the same logical layer.

Object Storage ServiceProduct Introduction 4 Basic Concepts


OBS provides the following storage classes: Standard, Infrequent Access, and Archive. Withdiversified storage classes, OBS caters to customer requirements on both storage performanceand costs. When creating a bucket, you can set a storage class for the bucket, which can alsobe modified after the creation.

Each bucket name in OBS must be globally unique and cannot be changed once the bucket iscreated. When a bucket is created, its access control list (ACL) is generated by default. TheACL is used to authorize users with permissions to your resources. Only authorized users canperform bucket operations, such as creating, deleting, viewing, and configuring buckets.

An account can have 100 buckets. The number and total size of objects in a bucket are notrestricted, relieving you of worries about space scalability.

OBS adopts the REST architectural style, and is based on HTTP and HTTPS. You can use theUniform Resource Locator (URL) to locate resources.

Figure 4-1 illustrates the relationship between buckets and objects in OBS.

Figure 4-1 Relationship between objects and buckets

4.3 AK and SKThe account provided by OBS includes the access key ID (AK) and secret access key (SK),which are used for identity authentication. If you use a client to send a request to OBS, therequest header must contain a signature. The signature is generated based on the SK, requesttime, and request type.

An AK and an SK group into a pair of keys used to access OBS. If you access data stored inOBS by making the API calls, AKs and SKs are used to generate authentication information.

After subscribing to OBS, you can log in the console, and obtain AKs and SKs on the MyCredential page. The system identifies users who access the system by AKs, and SKs areused for key authentication.

l An AK maps to only one user but a user can have multiple AKs.

l An SK maps to one AK, grouping into a pair of keys for accessing OBS and therebyensuring access security.



4.4 RegionWhen creating a bucket, you can specify a region for the bucket based on your requirementson the response latency, price, and request source. The specified region cannot be changedafter the bucket is created.

OBS is available in multiple regions. However, functions available on OBS may vary in theseregions as officially published on the management console.

After a bucket is created, all objects uploaded to the bucket will be stored in the data center ofthe region.



5 Using OBS

You can access OBS through the management console, clients, and the API.

Figure 5-1 Accessing methods

Table 5-1 Methods for accessing OBS

Method Description

OBS Console OBS Console is a web-based GUI. Through the console, you canperform operations on OBS resources directly.

OBS Browser OBS Browser is an OBS client running on Windows and Mac operatingsystems. You can use OBS Browser to manage the storage of objects onyour PC.

obscmd obscmd is an OBS client running on the Linux operating system. Itallows you to upload local files to OBS or download files from OBS.obscmd features multipart uploading and downloading, which cangreatly speed up data transmission.

Object Storage ServiceProduct Introduction 5 Using OBS


Method Description

SDK OBS SDK encapsulates APIs provided by OBS to simplify userdevelopment. Users can directly use API functions provided by theOBS SDK to obtain the OBS service capabilities.

API With the API, you can easily access OBS from web applications. Bymaking API calls, you can upload and download data at anytime,anywhere, or through any Internet device.

Object Storage ServiceProduct Introduction 5 Using OBS


6 User Permissions

Identity and Access Management (IAM) provides identity management and access controlfunctions for cloud services. Identity management manages user groups and users, and accesscontrol manages authorization of permissions to user groups and users.

For OBS, user permissions provided by IAM are primarily used to manage the access to OBSresources. For details, see descriptions about OBS resources in section "Bucket Permissions"in the OBS Console Operation Guide. Table 6-1 lists OBS resource permissions. You canassign one or more of these permissions to an IAM user to allow the user to operate OBSresources according to your needs. If none of the three permissions is selected, you will haveno permission to access OBS.

Table 6-1 OBS resource permissions

Permission Description

Tenant Administrator Users with this permission can perform any operation onOBS resources.

Tenant Guest Users with this permission can query the usage of OBSresources, in other words, this is the read permission to OBSresources.

OBS Buckets Viewer Users with this permission can obtain the list, metadata, andlocation information of buckets.

Table 6-2 lists the operations that can be performed on OBS resources after a user has therequired permissions.

Table 6-2 Permissions and the allowed operations on OBS resources

Operation TenantAdministratorPermission

Tenant GuestPermission

OBS BucketViewerPermission

Listing buckets Yes Yes Yes

Creating buckets Yes No No

Object Storage ServiceProduct Introduction 6 User Permissions





Deleting buckets Yes No No

Obtaining basicbucketinformation

Yes Yes Yes

Obtainingmonitoringstatistics aboutbuckets

Yes Yes No

Bucket accesscontrol

Yes No No

Modifying bucketstorage classes

Yes No No

Listing objects Yes Yes No

Listing objectswith multipleversions

Yes Yes No

Uploading files Yes No No

Creating folders Yes No No

Deleting files Yes No No

Deleting folders Yes No No

Downloading files Yes No No

Modifying objectstorage classes

Yes No No

Restoring files Yes No No

Canceling thedeletion of files

Yes No No

Deletingfragments

Yes No No

Object accesscontrol

Yes No No

Configuringobject metadata

Yes No No

Managingversioning

Yes No No

Managing logging Yes No No






Managing eventnotifications

Yes No No

Managing tags Yes No No

Managinglifecycle rules

Yes No No

Managing staticwebsite hosting

Yes No No

Managing domainnames

Yes No No

Managing cross-region replication

Yes No No

Managing imageprocessing

Yes No No



7 Application Scenarios

OBS can be used in video surveillance, video on demand (VoD), backup and archiving, HPC,mobile Internet, and enterprise cloud box (web disk) scenarios.

Video SurveillanceOBS provides huge storage space for video surveillance solutions. It also provides Standard,Infrequent Access, and Archive storage classes for differentiated data storage.

Figure 7-1 Video surveillance

Video on DemandOBS can work with the Content Delivery Network (CDN) service to provide the fast onlinevideo playback function, large storage space, single-stream bandwidth, and concurrent access.

Object Storage ServiceProduct Introduction 7 Application Scenarios


Figure 7-2 VoD

Backup and ArchivingOBS provides low-cost and highly-reliable access to storage. Different storage classes can beselected based on your specific requirements.

Figure 7-3 Backup and archiving

HPCBy working with cloud services such as Elastic Cloud Server (ESC), Auto Scaling (AS),Elastic Volume Service (EVS), Image Management Service (IMS), Identity and AccessManagement (IAM), and Cloud Eye, OBS can provide high-performance computing (HPC)with huge capacity, large single-stream bandwidth, and secure and reliable solutions.



Figure 7-4 HPC

Mobile Internet

By working with cloud service such as ECS, Elastic Load Balance (ELB), RelationalDatabase Service (RDS), CDN, and Domain Name Service (DNS), OBS provides the mobileInternet scenarios with solutions that have scalable resources, flexible configurations, largecapacity, reliable security, and high concurrency.

Figure 7-5 Mobile Internet

Enterprise Cloud Box (Web Disk)

By working with cloud services such as ECS, ELB, RDS, and Volume Backup Service (VBS),OBS provides web disk scenarios with a storage system that allows high concurrency, highreliability, low latency, and low cost. The storage capacity automatically scales as the volumeof data stored increases.



Figure 7-6 Enterprise cloud box (web disk)



8 Related Services

You can store objects directly in the huge storage space provided by OBS. If you havesubscribed to other cloud services, you can also leverage OBS resources that are wellintegrated with the other cloud services.

Table 8-1 Related services

Function Related Service Reference

Migrating data to OBS Object Storage Migration Service (OMS) MigratingData fromThird-PartyCloudServiceVendorstoOBS_OMS

Cloud Data Migration (CDM) MigratingData fromThird-PartyCloudServiceVendorstoOBS_CDMMigratingLocalData toOBS_CDM

Object Storage ServiceProduct Introduction 8 Related Services


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Data Express Service (DES) MigratingLocalData totheOBS_Disk-BasedDESMigratingLocalData totheOBS_Teleport-BasedDES

Direct Connect (DC) MigratingLocalData tothe OBS_DirectConnect

Intranet access Elastic Cloud Server (ECS) AccessingOBSFrom aPrivateNetwork

User identity authentication,specific user permission setting,and IAM agency configuration

Identity and Access Management (IAM) UserPermissionsSettingUserPermissionsCreatingan IAMAgency





























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Resource usage monitoring The Cloud Eye service can monitor thefollowing metrics for OBS:l Download trafficl Upload trafficl GET requestsl PUT requestsl Time to First Byte (TTFB) of GET

requestsl 4xx Errorsl 5xx Errors

CloudEyeMonitoring Metrics

Logging Cloud Trace Service (CTS) CloudTraceService

Event notification Simple Message Notification (SMN) EventNotification

Tags Tag Management Service (TMS) Tags

Server-side encryption Data Encryption Workshop: KeyManagement Service (KMS)

Server-SideEncryptionOverview

CDN acceleration Content Delivery Network (CDN) User-DefinedDomainNameBindingUsingCDN toAccelerate Accessto OBS






























Domain name resolution Domain Name Service (DNS) Using aUser-DefinedDomainName toHost aStaticWebsiteUser-DefinedDomainNameBindingUsingCDN toAccelerate Accessto OBS

OBS can be used as the storage resource pool for other cloud services, for example, RelationalDatabase Service (RDS), Image Management Service (IMS), Cloud Trace Service (CTS), andmore.

OBS can be used as the data source for data analysis and learning of other cloud services,such as MapReduce Service (MRS), Machine Learning Service (MLS), and more.





















9 Documentation Guide

Table 9-1 OBS support documentation

Document Abstract Format

Product Introduction Describes the OBS concepts, functions,features, application scenarios, and productadvantages.

HTML | PDF

Pricing Details Describes the billing modes of OBS. HTML

Purchase Guide Describes how to purchase OBS. HTML | PDF

Console OperationGuide

Describes all functions of OBS Console,guides you through operations on theConsole, and provides use cases to help youbetter use OBS.

HTML | PDF

Tools Guide Describes the functions and limitations ofOBS tools, such as OBS Browser, obscmd,OBSFTP, and obsutil, and providescomplete operation guides and applicationexamples.

HTML | PDF

User Guide (OutsideChinese Mainland)

Describes the OBS concepts, functions andfeatures, management console and clientapplications, and FAQs in regions outsideChinese mainland.

HTML | PDF

Image ProcessingFeature Guide

Describes basic concepts, functions, andFAQs, and provides operation guides toconsole operations and use cases.

HTML | PDF

Best Practices Provides examples to guide you throughproperly using OBS in various scenarios.

HTML | PDF

SDK References Describes the OBS software developmentkits (SDKs).

HTML

Object Storage ServiceProduct Introduction 9 Documentation Guide


https://support.huaweicloud.com/en-us/productdesc-obs/en-us_topic_0045853681.html

https://support.huaweicloud.com/en-us/productdesc-obs/obs-productdesc-en.pdf

https://support.huaweicloud.com/en-us/price-obs/en-us_topic_0088219452.html

https://support.huaweicloud.com/en-us/pg-obs/en-us_topic_0056636442.html

https://support.huaweicloud.com/en-us/pg-obs/obs-pg-en.pdf


https://support.huaweicloud.com/en-us/usermanual-obs/obs-usermanual-en.pdf

https://support.huaweicloud.com/en-us/clientogw-obs/obs_09_0001.html

https://support.huaweicloud.com/en-us/clientogw-obs/obs-clientogw-en.pdf

https://support.huaweicloud.com/en-us/eu-west-0-usermanual-obs/en-us_topic_0045853692.html

https://support.huaweicloud.com/en-us/eu-west-0-usermanual-obs/obs-eu-west-0-usermanual-en.pdf


https://support.huaweicloud.com/en-us/fg-obs/obs-fg-en.pdf


https://support.huaweicloud.com/en-us/bestpractice-obs/obs-bestpractice-en.pdf

https://support.huaweicloud.com/en-us/sdkreference-obs/obs_02_0001.html

Document Abstract Format

Developer Guide Describes how to conduct secondarydevelopments based on the APIs and SDKsprovided by OBS, which can be used as areference for your secondary developments.

HTML | PDF

API Reference Describes the OBS APIs, as well as thefunction and parameters of each API.

HTML | PDF

Technical White Paper Describes the benefits, architecture,reliability, and system security of OBS.

HTML

FAQs Lists the frequently asked questions,covering OBS concepts, security, functions,and features.

HTML

Glossary Lists OBS related terms and acronyms. HTML

Object Storage ServiceProduct Introduction 9 Documentation Guide


https://support.huaweicloud.com/en-us/devg-obs/en-us_topic_0100849894.html

https://support.huaweicloud.com/en-us/devg-obs/obs-devg-en.pdf

https://support.huaweicloud.com/en-us/api-obs/en-us_topic_0031051947.html

https://support.huaweicloud.com/en-us/api-obs/obs-api-en.pdf

https://support.huaweicloud.com/en-us/twp-obs/en-us_topic_0149198928.html

https://support.huaweicloud.com/en-us/obs_faq/obs_faq_0100.html

https://support.huaweicloud.com/en-us/obs_gls/index.html

10 Change History

ReleaseDate

What's New

2019-01-29 This issue is the eighteenth official release.This issue incorporates the following changes:l Added the section "Dedicated Object Storage Service".l Updated the section "Documentation Guide".

2018-12-21 This issue is the seventeenth official release.This issue incorporates the following changes:l Updated the description about user permissions.

2018-11-30 This issue is the sixteenth official release.This issue incorporates the following changes:l Updated the section "Related Services".l Updated the section "Documentation Guide".

2018-10-31 This issue is the fifteenth official release.This issue incorporates the following changes:l Updated the application scenarios of OBS.

2018-09-21 This issue is the fourteenth official release.This issue incorporates the following changes:l Added the description about methods to access OBS.

2018-08-31 This issue is the thirteenth official release.This issue incorporates the following changes:l Updated the description about user permissions.

2018-07-30 This issue is the twelfth official release.This issue incorporates the following changes:l Added the description about user permissions.

Object Storage ServiceProduct Introduction 10 Change History


ReleaseDate

What's New

2018-07-15 This issue is the eleventh official release.This issue incorporates the following changes:l Added the cloud trace function.

2018-06-30 This issue is the tenth official release.This issue incorporates the following changes:l Added the tag function.l Document structure adjustment: Removed the section of "User

Permissions", and added it to the OBS Console Operation Guide.

2018-06-08 This issue is the ninth official release.This issue incorporates the following changes:l Added the session of "Cloud Eye Monitoring Metrics".

2018-05-31 This issue is the eighth official release.This issue incorporates the following changes:l Added the user-defined domain name binding function.

2018-04-30 This issue is the seventh official release.This issue incorporates the following changes:l Added the monitor at the bucket level.

2018-04-15 This issue is the sixth official release.This issue incorporates the following changes:l Added the cross-Region replication function.

2018-03-16 This issue is the fifth official release.This issue incorporates the following changes:l Added the traffic monitoring function.l Added object storage classes.l Added the functions of changing bucket and object storage classes.l Deleted charging overview and charging cases from the purchase

guide. For details about the service fee, see the Pricing Description.

2017-12-20 This issue is the fourth official release.This issue incorporates the following changes:l Added the following content in the OBS Console Operation Guide.

– Added the description of projects to the section of "ConfiguringEvent Notification".

– Added the section of "Time Difference Is Longer Than 15 MinutesBetween the Client and Server".

l Added the function of one-click bucket policy setting for a new bucket.



ReleaseDate

What's New

2017-10-30 This issue is the third official release.This issue incorporates the following changes:l Added the information about the endpoint and access domain name in

the section of "Viewing Basic Information About a Bucket" in the OBSConsole Operation Guide.

l Modified the URL format in the section of "Accessing an Object Usingits URL" in the OBS Console Operation Guide.

l Added the configuration of universal policy in the section of"Configuring a Bucket Policy" in the OBS Console Operation Guide.

l Added the topic of "Failed to Configure Event Notification" under thesection of "Troubleshooting" in the OBS Console Operation Guide.

l In OBS Purchase Guide, deleted the restriction on the account whosebalance is less than CNY 100.

l Deleted the description about privacy protection from the section of"Registering a Public Cloud Service Account" in the OBS Quick Start.

2017-09-28 This issue is the second official release.This issue incorporates the following changes:l Added the section of "Documentation Guide" in the OBS Product

Introduction.l Added the section of "Related Operations" in the OBS Quick Start.l Modified the section of "Configuring a Bucket Policy" and added the

section of "Details About Actions and Conditions" in the OBS ConsoleOperation Guide.

2017-08-20 This issue is the first official release.



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