- What's New
- Service Overview
- Getting Started
- User Guide
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Best Practices
- Using a Custom Script to Implement Consistent Backup for MySQL
- Using a Custom Script to Implement Consistent Backup for SAP HANA
- Using a Custom Script to Implement Consistent Backup for Other Linux Applications
- Troubleshooting a Custom Script Error
- Verifying the Application-Consistent Backup Result (Linux)
- Verifying the Application-Consistent Backup Result (Windows)
- Protecting SQL Server in Failover Cluster Mode
- Protecting SQL Server in Always on Availability Groups Mode
- Change History
- API Reference
-
FAQs
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About Concepts
- What Is CSBS?
- What Are Full Backup and Incremental Backup?
- What Is Consistent Backup?
- What Are the Differences Between CSBS and VBS?
- What Is a Backup Policy?
- What Are the Differences Between Backup and Disaster Recovery?
- What Are the Differences Between Backup and Snapshot?
- Why Is the Disk Space Usage Displayed in the File System Different from the Backup Size?
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About Pricing
- How Is CSBS Billed?
- How Do Yearly/Monthly Resource Packages Function When I Have Bought More Than One?
- Are CSBS and VBS Resource Packages Interoperable Between CSBS and VBS?
- Why Am I Charged in Pay-per-use Mode Although I Have Purchased Resource Package?
- What Exactly Are the Function Package and the Storage Package?
- Will the CSBS Backups Displayed on the VBS Page Be Charged Repeatedly?
- How Do I Query CSBS Pay-Per-Use Billing Details?
- Why Is the Fee Deducted After a Backup Is Deleted?
- How Do I Disable CSBS?
- How Do I Stop CSBS from Charging?
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About Backup
- Does CSBS Support Backing Up All EVS Disks on an ECS?
- Do I Need to Stop the ECS Before Backing It Up?
- Can an ECS with Application Systems Be Backed Up?
- What Are the Minimum Backup Frequency and Maximum Number of Retained Backups Supported by CSBS?
- How Can I Distinguish Automatic Backups From Manual Backups?
- How Can I Configure a Backup Policy?
- Can I Choose to Back Up Only Some Partitions of a Disk?
- Does CSBS Support Cross-Region Backup for ECSs?
- Which Types of Databases Can Be Backed Up Using Database Server Backup?
- How Do I Select Among Database Server Backup, Cloud Server Backup, and Disk Backup?
- How Do I Migrate ECS Data Across Regions Using CSBS?
- Which Time Zone Is the Automatic Backup Time Based On?
- What Can I Do If a Backup Cannot Be Deleted?
- About Restoration
- Others
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About Concepts
- Troubleshooting
- Videos
- Glossary
-
More Documents
-
User Guide (Paris and Amsterdam Regions)
- Service Overview
- Getting Started
- Management Operations
-
FAQs
- About Concepts
-
About Backup
- Does CSBS Support Backing Up All EVS Disks on an ECS?
- Do I Need to Stop the ECS Before Backing It Up?
- Can an ECS with Application Systems Be Backed Up?
- What Are the Minimum Backup Frequency and Maximum Number of Retained Backups Supported by CSBS?
- How Can I Distinguish Automatic Backups From Manual Backups?
- Does CSBS Support Cross-Region Backup for ECSs?
- About Restoration
- Others
- Troubleshooting Cases
- Change History
- API Reference (Paris and Amsterdam Regions)
-
User Guide (Paris and Amsterdam Regions)
- General Reference
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Basic Concepts
Backup Policies
A backup policy is a set of rules for backing up data, including the policy name, policy status, execution time of backup jobs, backup period, and retention rules. The retention rules specify the retention duration and number of retained backups. After an ECS is associated with a backup policy, it can be automatically backed up according to the backup policy.
Backup
A backup is a copy of the original data that is backed up. A backup is used to restore the original data. It can be generated in a one-off or periodic method.
CSBS supports one-off backup and periodic backup. A one-off backup job is manually created by users and takes effect for only one time. Periodic backup jobs are automatically driven by a user-defined backup policy.
- The name of a one-off backup is manualbk_xxxx. It can be user- or system-defined.
- The name of a periodic backup is assigned automatically by the system. The name of a periodic backup is autobk_xxxx.
Instant Restore
Instant Restore restores ECS data and creating images for backups, which is much faster than normal restoration.
Backups generated before Instant Restore is enabled do not support instant restoration. To use the feature, perform a full backup and select Enable next to Full Backup when creating the backup. For details, see . After Instant Restore is enabled, manual backups for ECSs that have not been backed up automatically support instant restoration, without requiring the selection of Enable next to Full Backup.
No matter whether an ECS has been backed up or not, its automatic backups generated after Instant Restore is enabled do not support instant restoration, unless you manually perform a full backup on it.
Application-Consistent Backup
There are three types of backup consistency:
- Inconsistent backup: Files and disks are backed up at different points in time.
- Crash-consistent backup captures data existing on disks upon backup and backs up files and disks at the same point in time, without backing up memory data and quieting application systems. Backup consistency of application systems is not ensured. Though the application consistency is not ensured, disks, such as chkdsk, will be checked upon operating system re-startup to restore damaged data and log rollback will be performed on databases to keep data consistent.
- Application-consistent backup backs up files and disks at the same point in time, including memory data, to ensure application system consistency.
Project
Projects are used to group and isolate OpenStack resources (computing, storage, and network resources). A project can be a department or a project team. Multiple projects can be created for one account.
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