# Relationships with Other Services

Table 1 Relationships with other services
Interactive Function | Related Service | Reference
--- | --- | ---

You can use ECSs to create protected instances in SDRS.

ECS

- Step 2: Create a Protected Instance

You can use EVS disks to create replication pairs in SDRS.

EVS

- Creating a Replication Pair

You can select a VPC for protection groups in SDRS.

VPC

- Step 1: Create a Protection Group

You can use CTS to record SDRS operations for querying, auditing, or backtracking later.

CTS

- Interconnecting with CTS

Tags are identifiers of protected instances. You can add tags for protected instances, and classify and search for the protected instances based on these tags.

Tag Management Service (TMS)

- Managing Protected Instance Tags

Parent topic: Service Overview