# Related Services

Table 1 Related services
Interactive Function | Related Service | Reference
--- | --- | ---
The VBS service provides the data backup function for EVS disks. Data backups can be used to create EVS disks. | Elastic Volume Service (EVS) | Creating a VBS Backup Data Restoration Using a VBS Backup
Both CSBS and VBS are backup services and provide backup protection for tenant data. The backup generated by CSBS is also displayed on the VBS page. Table 2 describes the differences between CSBS and VBS. | Cloud Server Backup Service (CSBS) | VBS Backup Management
The encryption feature relies on KMS. If an EVS disk is encrypted, its backup data will be stored in encrypted mode. | Key Management Service (KMS) | Creating a VBS Backup
Working with TMS, VBS supports tag presetting and backup filtering and management. | Tag Management Service (TMS) | VBS Backup Management Managing Backup Policy Tags
VBS adopts SMN to notify users of VBS backup information. | Simple Message Notification (SMN) | Viewing Backup Jobs

Table 2 CSBS and VBS
Item | CSBS | VBS
--- | --- | ---
Backup and restoration objects | All EVS disks (including system and data disks) on a single ECS | One or more specified EVS disks (system or data disks)
Recommended scenario | An entire ECS needs to be protected. | Only data disks need to be backed up, because the system disk does not contain personal data.
Advantages | All EVS disks on an ECS have consistent data. They are backed up at the same time, eliminating the problem of data inconsistency caused by backups generated at different points in time. | Data is secure while the service is cost-competitive.

Parent topic: Service Overview