diff --git a/server/http_api.go b/server/http_api.go
index 3b4fceb..c49d18a 100644
--- a/server/http_api.go
+++ b/server/http_api.go
@@ -20,9 +20,15 @@ import (
 현재 접속 중인 Agent 목록을 보여줍니다.
 - http method : GET
 */
+const (
+	sub_folder_name_deploys   = string("_deploys")
+	sub_folder_name_downloads = string("_downloads")
+)
+
 func (h *houstonHandler) GetAgents(w http.ResponseWriter, r *http.Request) {
 	enc := json.NewEncoder(w)
-	enc.Encode(h.Operation().Hosts())
+	allHosts := h.Operation().Hosts()
+	enc.Encode(allHosts)
 }
 
 func (h *houstonHandler) GetDeploySources(w http.ResponseWriter, r *http.Request) {
@@ -84,7 +90,7 @@ func (h *houstonHandler) UploadDeploySource(w http.ResponseWriter, r *http.Reque
 	var filename string
 
 	if version == "config" {
-		filename = path.Join(h.deployPath, name, version, "config.json")
+		filename = path.Join(h.deployPath, name, version, "config"+ext)
 	} else {
 		// deploys 폴더는 파일시스템 서비스이므로 다운로드 가능
 		filename = path.Join(h.deployPath, name, version, name+ext)
@@ -180,14 +186,14 @@ func (h *houstonHandler) Deploy(w http.ResponseWriter, r *http.Request) {
 
 	configPath := ""
 	if _, err := os.Stat(path.Join(h.deployPath, name, "config", "config.json")); err == nil || errors.Is(err, fs.ErrExist) {
-		configPath = path.Join("deploys", name, "config", "config.json")
+		configPath = path.Join(sub_folder_name_deploys, name, "config", "config.json")
 	}
 
 	h.Operation().Deploy(MakeDeployRequest(
 		shared.DeployRequest{
 			Name:    name,
 			Version: version,
-			Url:     path.Join("deploys", name, version, latestFilename),
+			Url:     path.Join(sub_folder_name_deploys, name, version, latestFilename),
 			Config:  configPath,
 		},
 		targets,
@@ -357,7 +363,7 @@ func (h *houstonHandler) GetLogFileLinks(w http.ResponseWriter, r *http.Request)
 
 	var out []string
 	for _, lf := range logfiles {
-		out = append(out, path.Join("downloads", name, version, lf.Name()))
+		out = append(out, path.Join(sub_folder_name_downloads, name, version, lf.Name()))
 	}
 
 	enc := json.NewEncoder(w)
diff --git a/server/http_handler.go b/server/http_handler.go
index 42e7a09..546153d 100644
--- a/server/http_handler.go
+++ b/server/http_handler.go
@@ -45,9 +45,10 @@ func NewHoustonHandler() HoustonServerWithHandler {
 }
 
 func (h *houstonHandler) RegisterHandlers(serveMux *http.ServeMux, prefix string) error {
-	storagePath := loadServerConfig().StorageRoot
-	h.deployPath = path.Join(storagePath, "deploys")
-	h.downloadPath = path.Join(storagePath, "downloads")
+	config := loadServerConfig()
+	storagePath := config.StorageRoot
+	h.deployPath = path.Join(storagePath, sub_folder_name_deploys)
+	h.downloadPath = path.Join(storagePath, sub_folder_name_downloads)
 
 	if err := os.MkdirAll(h.deployPath, 0775); err != nil {
 		return err