- What's New
-
Service Overview
- DSS Infographics
- What Is DSS?
- Region and AZ
- Storage Pool Types and Performance
- Storage Pool Capacity Description
- DSS Disks
- DSS Three-Copy Redundancy
- Device Types and Usage Instructions
- Shared Disks and Usage Instructions
- Disk Encryption
- Disk Backup
- DSS and Other Services
- Billing
- Permissions
- Constraints
- Change History
-
Getting Started
- Operation Procedure
- Step 1: Apply for a Storage Pool
- Step 2: Create a Disk
- Step 3: Attach a Disk
-
Step 4: Initialize a Data Disk
- Introduction to Data Disk Initialization Scenarios and Partition Styles
- Initializing a Data Disk in Windows (Windows Server 2008)
- Initializing a Data Disk in Windows (Windows Server 2016)
- Initializing a Data Disk in Linux (fdisk)
- Initializing a Data Disk in Linux (parted)
- Initializing a Data Disk Greater Than 2 TB in Windows (Windows Server 2008)
- Initializing a Data Disk Greater Than 2 TB in Windows (Windows Server 2012)
- Initializing a Data Disk Greater Than 2 TB in Linux (parted)
- Change History
-
User Guide
- Permissions Management
- Storage Pool Management
-
Disk Management
- Detaching a Disk
- Attaching an Existing Disk
- Deleting a Disk
-
Expanding the Capacity of a Disk
- Introduction to Expansion Scenarios
- Expanding an In-use Disk
- Expanding an Available Disk
- Extending Partitions and File Systems on Windows
- Extending Partitions and File Systems on Linux (fdisk)
- Extending Partitions and File Systems on Linux (parted)
- Extending Partitions and File Systems of a SCSI Data Disk on Linux (fdisk)
- Extending Partitions and File Systems of a System Disk on Linux (fdisk)
- Managing Encrypted Disks
- Managing Shared Disks
- Managing Backups
- Change History
- API Reference
-
FAQs
- What Are the Risks of Not Expanding the Storage Pool Capacity?
- How Many Statuses Does a Storage Pool Have?
- How Many Statuses Does a Disk Have?
- Troubleshooting and Impacts on the DSS Usage
- Can I Attach a Disk to Multiple Servers?
- Will Data in the DSS Disk Be Lost When the DSS Disk Is Detached?
- What Should I Do If an Error Occurs on My DSS Disk?
- How Can I Test DSS Disk Performance?
- What Are the Restrictions on Attaching a Disk to an ECS?
- What Are the Precautions for Detaching a Disk from an ECS?
- Why My Disk Cannot Be Attached to a Server?
- Can the Disk Space Usage Be Reduced If I Delete Files on a Server?
- Videos
- Glossary
-
More Documents
-
User Guide (Paris and Amsterdam Regions)
- Introduction
-
Quick Start
- Operation Procedure
- Step 1: Apply for a Storage Pool
- Step 2: Create a Disk
- Step 3: Attach a Disk
-
Initialize a Data Disk
- Introduction to Data Disk Initialization Scenarios and Partition Styles
- Initializing a Data Disk in Windows (Windows Server 2008)
- Initializing a Data Disk in Windows (Windows Server 2016)
- Initializing a Data Disk in Linux (fdisk)
- Initializing a Data Disk in Linux (parted)
- Initializing a Data Disk Greater Than 2 TB in Windows (Windows Server 2008)
- Initializing a Data Disk Greater Than 2 TB in Windows (Windows Server 2012)
- Initializing a Data Disk Greater Than 2 TB in Linux (parted)
- Obtaining the Domain Name
- Obtaining the Region
-
Management
- Storage Pool Management
-
Disk Management
- Detaching a Disk
- Deleting a Disk
-
Expanding the Capacity of a Disk
- Introduction to Expansion Scenarios
- Expanding an In-use Disk
- Expanding an Available Disk
- Performing Post-Expansion Operations for a Windows Disk
- Performing Post-Expansion Operations for a Disk in Linux (fdisk)
- Performing Post-Expansion Operations for a Disk in Linux (parted)
- Performing Post-Expansion Operations for a SCSI Data Disk in Linux (fdisk)
- Performing Post-Expansion Operations for a System Disk in Linux (fdisk)
- Managing an Encrypted Disk
- Managing a Shared Disk
- Managing a Backup
-
FAQs
- What Are the Risks of Not Expanding the Storage Pool Capacity?
- How Many Statuses Does a Storage Pool Have?
- How Many Statuses Does a Disk Have?
- Troubleshooting and Impacts on the DSS Usage
- Can I Attach a Disk to Multiple Servers?
- Will Data in the DSS Disk Be Lost When the DSS Disk Is Detached?
- What Should I Do If an Error Occurs on My DSS Disk?
- What Are the Restrictions on Attaching a Disk to an ECS?
- What Are the Precautions for Detaching a Disk from an ECS?
- Why My Disk Cannot Be Attached to a Server?
- Change History
-
User Guide (Paris and Amsterdam Regions)
- General Reference
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Permissions
If you need to assign different permissions to employees in your enterprise to access your DSS resources, Identify and Access Management (IAM) is a good choice for fine-grained permissions management. IAM provides identity authentication, permissions management, and access control, helping you securely access your Huawei Cloud resources.
With IAM, you can use your Huawei Cloud account to create IAM users for your employees, and assign permissions to the users to control their access to specific resources. For example, some software developers in your enterprise need to use DSS resources but should not be allowed to delete them or perform any high-risk operations. In this scenario, you can create IAM users for the software developers and grant them only the permissions required for using DSS resources.
If your Huawei Cloud account does not require individual IAM users for permissions management, skip this section.
IAM can be used free of charge. You pay only for the resources in your account. For more information about IAM, see IAM Service Overview.
DSS Permissions
By default, new IAM users do not have permissions assigned. You need to add a user to one or more groups, and attach permissions policies or roles to these groups. Users inherit permissions from the groups to which they are added and can perform specified operations on cloud services based on the permissions.
DSS is a project-level service deployed and accessed in specific physical regions. To assign DSS permissions to a user group, specify the scope as region-specific projects and select projects for the permissions to take effect. If All projects is selected, the permissions will take effect for the user group in all region-specific projects. When accessing DSS, the users need to switch to a region where they have been authorized to use this service. When accessing DSS, the users need to switch to a region where they have been authorized to use this service.
- Roles: A type of coarse-grained authorization mechanism that defines permissions related to user responsibilities. This mechanism provides only a limited number of service-level roles for authorization. When using roles to grant permissions, you need to also assign other roles on which the permissions depend to take effect. However, roles are not an ideal choice for fine-grained authorization and secure access control.
- Policies: A type of fine-grained authorization mechanism that defines permissions required to perform operations on specific cloud resources under certain conditions. This mechanism allows for more flexible policy-based authorization, meeting requirements for secure access control. For example, you can grant ECS users only the permissions for managing a certain type of ECSs. Most policies define permissions based on APIs. For the API actions supported by DSS, see Permissions Policies and Supported Actions.
Role/Policy Name |
Description |
Type |
Dependencies |
---|---|---|---|
DSS FullAccess |
Full permissions for DSS. Users granted with this permission can create, expand, and query DSS resources. |
System-defined policy |
N/A |
DSS ReadOnlyAccess |
Read-only permission for DSS. Users granted with this permission can query DSS resources only. |
System-defined policy |
N/A |
Table 2 lists the common operations supported by each system-defined policy or role of DSS. Select the policies or roles as required.
Operation |
DSS FullAccess |
DSS ReadOnlyAccess |
---|---|---|
Creating storage pools |
√ |
× |
Querying storage pools |
√ |
√ |
Expanding storage pool capacities |
√ |
× |
Expanding disk capacity |
√ |
× |
Creating disks |
√ |
× |
Querying disks |
√ |
√ |
Detaching disks |
√ |
× |
Deleting disks |
√ |
× |
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