HUAWEI Scalable File Service Manual

Scalable File Service

FAQs

Issue 01

Date 2019-05-30

HUAWEI TECHNOLOGIES CO., LTD.

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Scalable File Service FAQs Contents

1 Concepts.................................................................................................................................... 1

1.1 What Is SFS?............................................................................................................................................................................. 1

1.2 What Is SFS Turbo?................................................................................................................................................................. 1

1.3 What Are the Dierences Between SFS, OBS, and EVS?........................................................................................... 2

2 Specications............................................................................................................................4

2.1 What Is the Maximum Size of a File That Can Be Stored in a File System?...................................................... 4

2.2 What Access Protocols Are Supported by SFS?.............................................................................................................4

2.3 How Many File Systems Can Be Created by Each Account?.................................................................................... 4

2.4 How Many ECSs Can a File System Be Mounted To?................................................................................................. 4

3 Restrictions................................................................................................................................5

3.1 Can the Capacity of a File System Be Expanded?........................................................................................................ 5

3.2 Can Data in a File System Be Migrated Across Regions?..........................................................................................5

3.3 Can a File System Be Mounted to Multiple Accounts?.............................................................................................. 5

4 Networks................................................................................................................................... 6

4.1 Can a File System Be Accessed Across VPCs?................................................................................................................6

4.2 Does SFS Support Cross-Region Mounting?.................................................................................................................. 6

4.3 Does the Security Group of a VPC

4.4 What Can I Do If the Data of the File System That Is Mounted to Two Servers Is Not Synchronized?

.............................................................................................................................................................................................................. 8

Aect SFS?............................................................................................................. 6

5 Billing......................................................................................................................................... 9

5.1 How Do I Purchase SFS?....................................................................................................................................................... 9

5.2 How Do I Renew the Service?.......................................................................................................................................... 11

5.3 How Do I Check Whether the Subscriber Is in Arrears?..........................................................................................11

5.4 Can I Purchase SFS Capacity-Oriented Resource Packages When I Still Have Valid Ones in Use?......... 12

5.5 How Do I Check the Usage of an SFS Capacity-Oriented Resource Package?................................................12

5.6 Do SFS Capacity-Oriented and SFS Turbo Share One Resource Package?....................................................... 14

6 Others...................................................................................................................................... 15

6.1 How Do I Access a File System from an ECS?............................................................................................................ 15

6.2 How Do I Check Whether a File System on an ECS Running Linux Is Available?.......................................... 15

6.3 What Resources Does SFS Occupy?................................................................................................................................15

6.4 Why Is the Capacity Displayed as 10P After the File System Is Mounted?...................................................... 16

Scalable File Service FAQs Contents

6.5 How Can I Migrate Data Between SFS and OBS?..................................................................................................... 16

6.6 Can a File System Be Accessed Across Multiple AZs?.............................................................................................. 17

6.7 Can I Upgrade an SFS Capacity-Oriented File System to an SFS Turbo File System?.................................. 17

6.8 How Can I Migrate Data Between SFS and EVS?......................................................................................................17

Scalable File Service FAQs 1 Concepts

1 Concepts

1.1 What Is SFS?

Scalable File Service (SFS) provides high-performance le storage that can be expanded and shrunk on demand. With SFS, you can enjoy shared spanning multiple ECSs. SFS supports the Network File System (NFS) protocol. You can seamlessly integrate existing applications and tools with the service.

le access

SFS provides an easy-to-use graphical user interface (GUI). On the GUI, users can create and optimizing

In addition, SFS features high reliability and availability. It can be elastically expanded, and it performs better as its capacity grows. The service is suitable for a wide range of scenarios, including media processing, management and web services, big data, and analytic applications.

congure le systems, saving eort in deploying, resizing, and le systems.

1.2 What Is SFS Turbo?

SFS Turbo enables high-performance le storage that can be expanded and shrunk on demand. It provides SFS Turbo supports the Network File System (NFS) protocol (only NFSv3). You can seamlessly integrate existing applications and tools with the service.

SFS Turbo provides an easy-to-use graphical user interface (GUI). On the GUI, users can create and and optimizing le systems.

In addition, SFS Turbo features high reliability and availability. It can be elastically expanded, and it performs better as its capacity grows. The service is suitable for a wide range of scenarios, including enterprise and software development. For details about the

System Types.

congure le systems, saving eort in deploying, resizing,

le sharing, content

le sharing services for Elastic Cloud Servers (ECSs).

oce, high-performance websites,

le system types, see File

Scalable File Service FAQs 1 Concepts

1.3 What Are the Dierences Between SFS, OBS, and EVS?

Table 1-1 shows the comparison between SFS, Object Storage Service (OBS), and

Elastic Volume Service (EVS).

Table 1-1 Comparison between SFS, OBS, and EVS

DimensionSFS OBS EVS

Concept SFS provides on-

demand highperformance le storage, which can be shared by multiple ECSs. SFS is similar to a remote directory for Windows or Linux OSs.

Data storage logic

Access method

Stores les and sorts and displays data in the hierarchy of les and folders.

Attach le systems to ECSs. You need to specify a network address for access or change the network address to a local directory for access. The NFS and CIFS protocols are used.

OBS provides massive, secure, reliable, and cost- eective data storage capabilities for users to store data of any type and size.

Stores objects. Files can be directly stored. The les automatically generate corresponding system metadata. Users can also customize the metadata of

You can access OBS through the Internet or Direct Connect. You need to specify the bucket address for access. The transmission protocols such as HTTP and HTTPS are used.

les.

EVS provides scalable block storage that features high reliability, high performance, and rich specications for ECSs to meet service requirements in dierent scenarios. An EVS disk is similar to a hard disk on a PC.

Stores binary data and cannot directly store les. To store les, you need to format the le system rst.

An EVS disk can only be used by mounting to an ECS or BMS and cannot be directly accessed by OS applications. It must be formatted into a le system for access.

Scalable File Service FAQs 1 Concepts

DimensionSFS OBS EVS

Applicatio n Scenario

High-performance computing (HPC), media processing, le sharing, content management, and web services

NOTE

HPC: High bandwidth is required for shared le storage, such as gene sequencing and image rendering.

Big data analysis, static website hosting, online video on demand (VoD), gene sequencing, and intelligent video surveillance

HPC, enterprise core cluster applications, enterprise application systems, and development and testing

NOTE

HPC: High-speed and high-IOPS storage is required, such as industrial design and energy exploration.

Capacity PB-scale EB-scale TB-scale

Latency 3–10 ms 10 ms 1–2 ms

IOPS/TPS 10,000 for a single

le system

Quadrillion 33,000 for a single

disk

BandwidthGB/s TB/s MB/s

Data

Yes Yes Yes sharing supported

Remote access supported

Online editing supported

Used independe ntly

Yes Yes No

Yes No Yes

Yes Yes No

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