Solution Introduction

When a system deployed on a BMS encounters an external virus intrusion, misoperation, or service software bug, you can use the Cloud Server Backup Service (CSBS) which backs up your BMS periodically and automatically (the minimum backup period is one hour). When the preceding fault occurs, you can use the backup to quickly restore your BMS to avoid data loss.

CSBS backs up the BMS configuration and the data of EVS disks of the BMS in the highly reliable Object Storage Service (OBS) to ensure the security of your data.

Figure 1 Backup and restoration

Application Scenarios

In scenarios that require high data security, such as enterprise core databases and government and enterprise finance, you are advised to use this scheme to back up BMSs to improve data reliability.

Advantages

• Convenient: You can customize policies for online backup. The backup settings are simple and easy to operate.
• Efficient: Incremental backup and restoration are supported. The RTO is minute-level.
• Reliable: All EVS disks are backed up simultaneously, avoiding data inconsistency caused by the different backup creation time. The OBS durability is 99.999999999%.

Restrictions and Limitations

• BMS backups cannot be used to create images.
• BMSs with shared EVS disks cannot be backed up.
• When the BMS is restored using backup, the BMS will automatically stop, which will interrupt tenant services. After the BMS is stopped, it is locked for a specified time period during which tenants cannot perform operations on the BMS.

Prerequisites

1. Create a key pair.

   To ensure system security, you are recommended to use the key authentication mode to authorize the user who attempts to log in to a BMS. Therefore, you must use an existing key pair or create a new one for remote login authentication.

   Create a key pair by following the instructions in Creating a Key Pair. If you already have a key pair, skip this step.

2. Create a VPC.

   BMSs use networks, including subnets and security groups, provided by a Virtual Private Cloud (VPC).

   For how to create a VPC, see Creating a VPC.

Procedure

The BMS backup and restoration procedure is as follows:

1. Creating a Backup Policy: Set the backup time, backup period, and retention rules for automatically backup of BMS data.
2. Purchasing and Configuring a BMS: Purchase a BMS that supports quick provisioning and bind a backup policy to it. Initialize EVS disks and deploy required application software.
3. Creating a BMS Backup: The BMS is automatically backed up at fixed time points based on the preset backup policy. You can also manually back up the BMS at any time.
4. Viewing Backups and Restoring Data: View the backups created automatically or manually on the management console. Restore the BMS data to a specified time point as you need.