Updated on 2025-07-24 GMT+08:00

Tag

Tags facilitate DCS instance identification and management. A tag consists of a tag key and tag value. Table 1 describes the naming rules for them.

**Table 1** Tag key and value requirements
Parameter	Requirements
Tag key	Cannot be left blank. Must be unique for the same instance. Consists of a maximum of 128 characters. Can contain letters of any language, digits, spaces, and special characters _ . : = + - @ Cannot start or end with a space. Cannot start with _sys_.
Tag value	Consists of a maximum of 255 characters. Can contain letters of any language, digits, spaces, and special characters _ . : / = + - @ Cannot start or end with a space. Can be left blank.