HUAWEI Scalable File Service Manual

Scalable File Service

FAQs

Issue	01
Date	2019-05-30

HUAWEI TECHNOLOGIES CO., LTD.

No part of this document may be reproduced or transmitted in any form or by any means without prior written consent 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 respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise c in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.

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

Issue 01 (2019-05-30)

Scalable File Service
FAQs	Contents

Contents

1 Concepts....................................................................................................................................		1
1.1	What Is SFS?.............................................................................................................................................................................	1
1.2	What Is SFS Turbo?.................................................................................................................................................................	1
1.3	What Are the ff nc Between SFS, OBS, and EVS?...........................................................................................	2

2	............................................................................................................................	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 ff c SFS?.............................................................................................................	6
4.4	What Can I Do If the Data of the File System That Is Mounted to Two Servers Is Not Synchronized?	8
..............................................................................................................................................................................................................		8

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

Issue 01 (2019-05-30)		Copyright © Huawei Technologies Co., Ltd.	ii

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

Issue 01 (2019-05-30)

iii

Scalable File Service
FAQs	1 Concepts

1Concepts

1.1 What Is SFS?


Scalable File Service (SFS) provides high-performance	storage that can be
expanded and shrunk on demand. With SFS, you can enjoy shared		access

spanning multiple ECSs. SFS supports the Network File System (NFS) protocol. You can seamlessly integrate existing applications and tools with the service.

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

create and c n	systems, saving ff in deploying, resizing, and
optimizing	systems.

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,	sharing, content
management and web services, big data, and analytic applications.

1.2 What Is SFS Turbo?

SFS Turbo enables high-performance storage that can be expanded and shrunk on demand. It provides sharing services for Elastic Cloud Servers (ECSs). 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 c n		systems, saving ff	in deploying, resizing,
and optimizing	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 ffic	high-performance websites,
and software development. For details about the	system types, see File
System Types.

Issue 01 (2019-05-30)

Scalable File Service
FAQs	1 Concepts

1.3 What Are the				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

	Dimensio	SFS		OBS		EVS
	n
	Concept	SFS provides on-		OBS provides		EVS provides scalable
		demand high-		massive, secure,		block storage that
		performance		reliable, and c		features high
		storage, which can		ff c	data	reliability, high
		be shared by		storage capabilities		performance, and rich
		multiple ECSs. SFS		for users to store		c	c	n	for ECSs
		is similar to a		data of any type		to meet service
		remote directory		and size.		requirements in
		for Windows or				ff	n	scenarios. An
		Linux OSs.				EVS disk is similar to a
						hard disk on a PC.

	Data	Stores	and	Stores objects. Files		Stores binary data and
	storage	sorts and displays		can be directly		cannot directly store
	logic	data in the		stored. The			To store		you
		hierarchy of		automatically		need to format the
		and folders.		generate		system
				corresponding
				system metadata.
				Users can also
				customize the
				metadata of

	Access	Attach	systems	You can access OBS		An EVS disk can only
	method	to ECSs. You need		through the Internet		be used by mounting
		to specify a		or Direct Connect.		to an ECS or BMS and
		network address for		You need to specify		cannot be directly
		access or change		the bucket address		accessed by OS
		the network		for access. The		applications. It must
		address to a local		transmission		be formatted into a
		directory for access.		protocols such as		system for access.
		The NFS and CIFS		HTTP and HTTPS
		protocols are used.		are used.

Issue 01 (2019-05-30)

Scalable File Service
FAQs				1 Concepts

	Dimensio	SFS	OBS	EVS
	n
	Applicatio	High-performance	Big data analysis,	HPC, enterprise core
	n	computing (HPC),	static website	cluster applications,
	Scenario	media processing,	hosting, online video	enterprise application
		sharing, content	on demand (VoD),	systems, and
		management, and	gene sequencing,	development and
		web services	and intelligent video	testing
		NOTE	surveillance	NOTE
		HPC: High		HPC: High-speed and
		bandwidth is		high-IOPS storage is
		required for shared		required, such as
		storage, such as		industrial design and
		gene sequencing		energy exploration.
		and image
		rendering.

	Capacity	PB-scale	EB-scale	TB-scale

	Latency	3–10 ms	10 ms	1–2 ms

	IOPS/TPS	10,000 for a single	Quadrillion	33,000 for a single
		system		disk

	Bandwidt	GB/s	TB/s	MB/s
	h

	Data	Yes	Yes	Yes
	sharing
	supported

	Remote	Yes	Yes	No
	access
	supported

	Online	Yes	No	Yes
	editing
	supported

	Used	Yes	Yes	No
	independe
	ntly

Issue 01 (2019-05-30)

+ 14 hidden pages

HUAWEI Scalable File Service Manual

Contents

1 Concepts

1.1 What Is SFS?

1.2 What Is SFS Turbo?