diff --git a/src/main/java/com/eactive/eai/rms/onl/manage/comm/server/ServerManService.java b/src/main/java/com/eactive/eai/rms/onl/manage/comm/server/ServerManService.java
index 31c1ee2..a06a8f4 100644
--- a/src/main/java/com/eactive/eai/rms/onl/manage/comm/server/ServerManService.java
+++ b/src/main/java/com/eactive/eai/rms/onl/manage/comm/server/ServerManService.java
@@ -17,6 +17,7 @@ import com.eactive.eai.data.entity.onl.server.EAIServer;
 import com.eactive.eai.rms.common.base.OnlBaseService;
 import com.eactive.eai.rms.data.entity.onl.adapter.AdapterGroupService;
 import com.eactive.eai.rms.data.entity.onl.server.EAIServerService;
+import com.eactive.eai.rms.onl.common.exception.BizException;
 
 @Service
 @Transactional
@@ -78,6 +79,11 @@ public class ServerManService extends OnlBaseService {
 	}
 
 	public void insert(EAIServerUI eaiServerUI) {
+		String eaiSevrInstncName = eaiServerUI.getEaiSevrInstncName();
+		if (eaiServerService.existsById(eaiSevrInstncName)) {
+			throw new BizException("서버 인스턴스명[" + eaiSevrInstncName + "]은 이미 등록되어 있습니다.");
+		}
+
 		EAIServer eaiServer = eaiServerUIMapper.toEntity(eaiServerUI);
 		eaiServerService.save(eaiServer);
 	}