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Elastic File Storage

Managing file systems

Creating file systems

This topic explains how to create a file system.

Prerequisites

Before creating a file system, make sure you have completed the following:

You have created a Volcano Engine account and completed enterprise verification. For more information, see Account registration and Real Name Verification.

You have created a project for the file system. For information on projects and how to create one, see Project overview and Project management.

You have created a virtual private cloud (VPC). If you have not created a VPC or want to create a new one, see Creating a VPC.

Steps

In the top menu bar, select the region where you want to create the file system.

In the left navigation pane, click File System.

On the File System page, click Create File System.

Set the following parameters on the Create Elastic File System page.

Basic information

Parameter	Description
File System name	Enter the name of the file system. File system names must: Start with Chinese characters or English letters. Contain only Chinese characters, letters, numbers, periods (.), underscores (_), or hyphens (-). Be between 1 and 128 characters long.
Description	Provide additional information about the file system to help you identify it later. Descriptions must: Start with Chinese characters, letters, or numbers. Contain only Chinese characters, letters, numbers, spaces, periods (.), underscores (_), hyphens (-), equal signs (=), English commas (,), Chinese commas (，), and Chinese periods (。). Be between 0 and 255 characters long.
Billing type	EFS currently only supports pay-as-you-go billing. For more information, see Billing overview.
Availability zone	Select the availability zone for the file system. tip For optimal performance, deploy your file system and ECS instance in the same availability zone.

Instance configuration

Parameter

Description

Instance type

Select the product specification that best fits your needs. For more information, see Product specifications.

Premium: Uses solid state drives (SSD) to deliver high performance with lower latency. You can access your stored data after mounting the file system with NFS and FSX.

Basic: Uses hard disk drives (HDD) to offer high-capacity file storage at a lower cost. You can access your stored data after mounting the file system with NFS and FSX.

Bandwidth configuration

Parameter	Description
Bandwidth mode	Choose the bandwidth mode that best fits your needs. The options are: Provisioned bandwidth mode (Recommended): This mode is ideal for predictable workloads. It supports up to 200,000 MB/s of read bandwidth and 1,800,000 IOPS. Configure the provisioned bandwidth according to your needs. Once you have selected this option, you will only be charged for bandwidth that exceeds the baseline bandwidth. tip To ensure optimal performance when you begin using this service, we recommend configuring a higher initial bandwidth in this mode. Baseline bandwidth mode: This mode provides scalable bandwidth based on storage capacity for workloads with basic performance requirements. It supports up to 30,000 MB/s of read bandwidth and 900,000 IOPS.
Provisioned bandwidth	When you set the Bandwidth mode to Provisioned bandwidth mode, you must set the size of the provisioned bandwidth. Provisioned bandwidth starts at 100 MB/s, with a maximum of 200,000 MB/s and increments of 100 MB/s.
Estimated Capacity	Enter a value to estimate the performance of the file system once the storage capacity is reached. The valid range is 0 to 10 PiB.
Estimated result	Displays the estimated performance of the file system at the specified storage capacity, including: 100% read 100% write Billed capacity Billed Provisioned Bandwidth tip The Billed Provisioned Bandwidth parameter only appears when Provisioned Bandwidth mode is selected.
Burst bandwidth	This mode is designed for workloads that have high bursts of short-duration, unpredictable peak traffic. This feature is disabled by default. When enabled, it dynamically allocates idle cluster bandwidth resources. Performance automatically scales with workload pressure, and you only pay for bandwidth used beyond the baseline and provisioned amounts, allowing for flexible cost management.
Burst bandwidth limit	When you select to enable burst bandwidth, set the cap for the burst bandwidth. Burst bandwidth starts at 100 MB/s, with increments of 100 MB/s, and can burst up to a maximum read bandwidth of 60,000 MB/s and an IOPS of 1,800,000.

Advanced configuration

Parameter	Description
Tag	A tag is a key-value pair. Click Add tag to create a tag for this file system to make identification, searching, and grouping easier. tip A file system can have up to 20 tags.
Project	Select or create a project to which the file system belongs. tip A project is a resource grouping mechanism provided by Volcano Engine that helps you achieve logical resource isolation. Projects can be used for authorization and cost allocation. For more information, see Project overview.

Click Next step.

Verify your configurations. Then, check the box that says I have read and agree to The Terms of Storage Products and Service and Service Level Agreement for Elastic File Storage.

Click Submit.

tip

Creating a file system takes time. After submitting your order, click Go to the console on the File System page to check the progress of the creation. Once the file system State shows Running, it means that the file system has been successfully created.

Last updated: 2026.04.21 18:53:59