diff --git a/src/common/inc/tglobal.h b/src/common/inc/tglobal.h
index e7927605cbfe9b0d07efe351dd67e308d5b74173..da42c064ec9a34c7ffb30299e879a55024bcec39 100644
--- a/src/common/inc/tglobal.h
+++ b/src/common/inc/tglobal.h
@@ -33,6 +33,7 @@ extern int32_t  tsStatusInterval;
 extern int16_t  tsNumOfVnodesPerCore;
 extern int16_t  tsNumOfTotalVnodes;
 extern int32_t  tsNumOfMnodes;
+extern int32_t  tsEnableVnodeBak;
 
 // common
 extern int      tsRpcTimer;
diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index 225f12a2100f0e3204ff6525ecfc2c6a62ab10f1..67c104878a9c924181e1d2cbb0883bf7dd366ebe 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -41,6 +41,8 @@ int32_t  tsStatusInterval = 1;  // second
 int16_t  tsNumOfVnodesPerCore = 8;
 int16_t  tsNumOfTotalVnodes = TSDB_INVALID_VNODE_NUM;
 int32_t  tsNumOfMnodes = 3;
+int32_t  tsEnableVnodeBak = 1;
+
 
 // common
 int32_t tsRpcTimer = 1000;
@@ -422,6 +424,16 @@ static void doInitGlobalConfig() {
   cfg.unitType = TAOS_CFG_UTYPE_NONE;
   taosInitConfigOption(cfg);
 
+  cfg.option = "vnodeBak";
+  cfg.ptr = &tsEnableVnodeBak;
+  cfg.valType = TAOS_CFG_VTYPE_INT32;
+  cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW;
+  cfg.minValue = 0;
+  cfg.maxValue = 1;
+  cfg.ptrLength = 1;
+  cfg.unitType = TAOS_CFG_UTYPE_NONE;
+  taosInitConfigOption(cfg);
+
   cfg.option = "balance";
   cfg.ptr = &tsEnableBalance;
   cfg.valType = TAOS_CFG_VTYPE_INT32;
diff --git a/src/util/src/tutil.c b/src/util/src/tutil.c
index 9c5bffef953b1bd2fc48b8ffc20a60d0e0fa126f..1a74359f47af23d0073f41901f86282e3654e212 100644
--- a/src/util/src/tutil.c
+++ b/src/util/src/tutil.c
@@ -801,6 +801,11 @@ int tmkdir(const char *path, mode_t mode) {
 }
 
 void taosMvDir(char* destDir, char *srcDir) {
+  if (0 == tsEnableVnodeBak) {
+    uInfo("vnode backup not enabled");
+    return;
+  }
+
   char shellCmd[1024+1] = {0}; 
   
   //(void)snprintf(shellCmd, 1024, "cp -rf %s %s", srcDir, destDir);