EVS and Other Services

Figure 1 shows the relationships between EVS and other services.

Figure 1 Relationships between EVS and other services

**Table 1** EVS and other services
Interactive Function	Related Service	Reference
EVS disks can be attached to ECSs and used as scalable block storage devices.	ECS	Attaching a Non-Shared Disk Attaching a Shared Disk
SCSI EVS disks can be attached to BMSs and used as scalable block storage devices.	BMS	Attaching a Non-Shared Disk Attaching a Shared Disk
Backups can be created for EVS disks to guarantee the reliability and security of the server data.	CBR	EVS Backup Managing EVS Backups
EVS disk encryption depends on the KMS service in DEW. Keys provided by KMS can be used to encrypt EVS disks (both system and data disks), thus improving EVS disk data security.	DEW	EVS Encryption Managing Encrypted EVS Disks
After EVS is enabled, the performance metrics of monitored disks can be viewed through Cloud Eye without installing any additional plug-in. The monitored metrics include Disk Read Rate, Disk Write Rate, Disk Read Requests, and Disk Write Requests.	Cloud Eye	Viewing EVS Monitoring Data
Cloud Trace Service (CTS) records operations of EVS resources, facilitating user query, audit, and backtracking.	CTS	Auditing
Tag Management Service (TMS) tags are used to identify EVS resources for purposes of easy categorization and quick search.	TMS	Adding a Tag