diff --git a/controller-rpc.go b/controller-rpc.go
index 4d2357f11..56cee5f0d 100644
--- a/controller-rpc.go
+++ b/controller-rpc.go
@@ -34,6 +34,8 @@ type controllerRPCService struct {
 	serverList []ServerRep
 }
 
+const tb = (1024 * 1024 * 1024 * 1024)
+
 func makeDonut(args *DonutArgs, reply *DefaultRep) *probe.Error {
 	conf := &donut.Config{Version: "0.0.1"}
 	conf.DonutName = args.Name
@@ -56,6 +58,19 @@ func (s *controllerRPCService) MakeDonut(r *http.Request, args *DonutArgs, reply
 	return nil
 }
 
+// StorageStats returns dummy storage stats
+func (s *controllerRPCService) StorageStats(r *http.Request, args *DonutArgs, reply *StorageStatsRep) error {
+	reply.Buckets = []BucketStorage{{"bucket1", 4 * tb}, {"bucket2", 120 * tb}, {"bucket3", 45 * tb}}
+	return nil
+}
+
+// RebalaceStats returns dummy rebalance stats
+func (s *controllerRPCService) RebalanceStats(r *http.Request, args *DonutArgs, reply *RebalanceStatsRep) error {
+	reply.Inprogress = []string{"bucket1/obj1", "bucket2/obj2", "bucket3/obj3"}
+	reply.Done = []string{"bucket1/rebobj1", "bucket2/rebobj2", "bucket3/rebobj3"}
+	return nil
+}
+
 // generateAuth generate new auth keys for a user
 func generateAuth(args *AuthArgs, reply *AuthRep) *probe.Error {
 	config, err := auth.LoadConfig()
diff --git a/rpc-definitions.go b/rpc-definitions.go
index 741db7ca7..689e80f96 100644
--- a/rpc-definitions.go
+++ b/rpc-definitions.go
@@ -115,3 +115,20 @@ type AuthRep struct {
 	AccessKeyID     string `json:"accessKeyId"`
 	SecretAccessKey string `json:"secretAccessKey"`
 }
+
+// BucketStorage bucket-name and storage used
+type BucketStorage struct {
+	Name string `json:"name"`
+	Used uint64 `json:"used"`
+}
+
+// StorageStatsRep array of buckets-storage-stats
+type StorageStatsRep struct {
+	Buckets []BucketStorage `json:"buckets"`
+}
+
+// RebalanceStatsRep rebalance information
+type RebalanceStatsRep struct {
+	Inprogress []string `json:"inprogress"`
+	Done       []string `json:"done"`
+}