diff --git a/deps/oblib/src/lib/restore/ob_i_storage.h b/deps/oblib/src/lib/restore/ob_i_storage.h
index 37c407162a452d547b07f7095ad7cfc0b61b577d..bf3bfdc06570a9f2e3ae5f46247b523673ed8498 100644
--- a/deps/oblib/src/lib/restore/ob_i_storage.h
+++ b/deps/oblib/src/lib/restore/ob_i_storage.h
@@ -28,6 +28,12 @@ enum StorageOpenMode {
 };
 class ObIStorageUtil {
 public:
+  enum {
+    NONE = 0,
+    DELETE = 1,
+    TAGGING = 2,
+    MAX
+  };
   virtual int is_exist(const common::ObString& uri, const common::ObString& storage_info, bool& exist) = 0;
   virtual int get_file_length(
       const common::ObString& uri, const common::ObString& storage_info, int64_t& file_length) = 0;
diff --git a/deps/oblib/src/lib/restore/ob_storage_oss_base.cpp b/deps/oblib/src/lib/restore/ob_storage_oss_base.cpp
index 1d8a038d95ecbd0bbc0fac3ad1f21b3a696adb28..5f635198b00d1340c8a0f9c0c2cc6baaacf8447a 100644
--- a/deps/oblib/src/lib/restore/ob_storage_oss_base.cpp
+++ b/deps/oblib/src/lib/restore/ob_storage_oss_base.cpp
@@ -274,7 +274,11 @@ void ObOssEnvIniter::global_destroy()
   }
 }
 
-ObStorageOssBase::ObStorageOssBase() : aos_pool_(NULL), oss_option_(NULL), is_inited_(false)
+ObStorageOssBase::ObStorageOssBase() : 
+    aos_pool_(NULL),
+    oss_option_(NULL), 
+    is_inited_(false),
+    delete_mode_(ObIStorageUtil::DELETE)
 {
   memset(oss_domain_, 0, OB_MAX_URI_LENGTH);
   memset(oss_endpoint_, 0, MAX_OSS_ENDPOINT_LENGTH);
@@ -293,6 +297,7 @@ void ObStorageOssBase::reset()
   memset(oss_endpoint_, 0, MAX_OSS_ENDPOINT_LENGTH);
   memset(oss_id_, 0, MAX_OSS_ID_LENGTH);
   memset(oss_key_, 0, MAX_OSS_KEY_LENGTH);
+  delete_mode_ = ObIStorageUtil::DELETE;
   if (is_inited_) {
     if (NULL != aos_pool_) {
       aos_pool_destroy(aos_pool_);
@@ -324,6 +329,23 @@ int ObStorageOssBase::init(const common::ObString& storage_info)
   return ret;
 }
 
+int ObStorageOssBase::set_delete_mode(const char *parameter)
+{
+  int ret = OB_SUCCESS;
+  if (NULL == parameter) {
+    ret = OB_INVALID_ARGUMENT;
+    OB_LOG(WARN, "invalid args", K(ret), KP(parameter));
+  } else if (0 == strcmp(parameter, "delete")) {
+    delete_mode_ = ObIStorageUtil::DELETE;
+  } else if (0 == strcmp(parameter, "tagging")) {
+    delete_mode_ = ObIStorageUtil::TAGGING;
+  } else {
+    ret = OB_INVALID_ARGUMENT;
+    OB_LOG(WARN, "delete mode is invalid", K(ret), K(parameter));
+  }
+  return ret;
+}
+
 int ObStorageOssBase::parse_oss_arg(const common::ObString& storage_info)
 {
   int ret = OB_SUCCESS;
@@ -342,6 +364,7 @@ int ObStorageOssBase::parse_oss_arg(const common::ObString& storage_info)
     const char* HOST = "host=";
     const char* ACCESS_ID = "access_id=";
     const char* ASSCESS_KEY = "access_key=";
+    const char *DELETE_MODE = "delete_mode=";
 
     MEMCPY(tmp, storage_info.ptr(), storage_info.length());
     tmp[storage_info.length()] = '\0';
@@ -362,6 +385,10 @@ int ObStorageOssBase::parse_oss_arg(const common::ObString& storage_info)
         if (OB_FAIL(set_oss_field(token + strlen(ASSCESS_KEY), oss_key_, sizeof(oss_key_)))) {
           OB_LOG(WARN, "failed to set oss_key_", K(ret), K(token));
         }
+      } else if (0 == strncmp(DELETE_MODE, token, strlen(DELETE_MODE))) {
+        if (OB_FAIL(set_delete_mode(token + strlen(DELETE_MODE)))) {
+          OB_LOG(WARN, "failed to set delete mode", K(ret), K(token)); 
+        }
       } else {
         OB_LOG(DEBUG, "unkown oss info", K(*token), K(storage_info));
       }
@@ -1224,6 +1251,66 @@ int ObStorageOssUtil::mkdir(const common::ObString& uri, const common::ObString&
   return ret;
 }
 
+int ObStorageOssUtil::delete_object(
+    const common::ObString &uri,
+    const common::ObString &bucket_str,
+    const common::ObString &object_str)
+{
+  int ret = OB_SUCCESS;
+  aos_string_t bucket;
+  aos_string_t object;
+  aos_str_set(&bucket, bucket_str.ptr());
+  aos_str_set(&object, object_str.ptr());
+  aos_table_t *resp_headers = NULL;
+  aos_status_t *aos_ret = NULL;
+
+  if (OB_ISNULL(aos_ret = oss_delete_object(oss_option_, &bucket, &object, &resp_headers))
+      || !aos_status_is_ok(aos_ret)) {
+    ret = OB_OSS_ERROR;
+    OB_LOG(WARN, "delete object fail", K(ret), K(uri));
+    print_oss_info(aos_ret);
+  } else {
+    OB_LOG(INFO, "delete object succ", K(uri));
+  }
+
+  return ret;
+}
+
+int ObStorageOssUtil::tagging_object(
+    const common::ObString &uri,
+    const common::ObString &bucket_str,
+    const common::ObString &object_str)
+{
+  int ret = OB_SUCCESS;
+  /*set object tagging*/
+  aos_string_t bucket;
+  aos_string_t object;
+  aos_table_t *head_resp_headers = NULL;
+  oss_tag_content_t *tag_content = NULL;
+  aos_list_t tag_list;
+  aos_status_t *aos_ret = NULL;
+  aos_str_set(&bucket, bucket_str.ptr());
+  aos_str_set(&object, object_str.ptr());
+  aos_list_init(&tag_list);
+  if (OB_ISNULL(tag_content = oss_create_tag_content(aos_pool_))) {
+    ret = OB_OSS_ERROR; 
+    OB_LOG(WARN, "tag content is null", K(ret), K(uri));
+  } else {
+    aos_str_set(&tag_content->key, "delete_mode");
+    aos_str_set(&tag_content->value, "tagging");
+    aos_list_add_tail(&tag_content->node, &tag_list);
+    if (OB_ISNULL(aos_ret = oss_put_object_tagging(oss_option_, &bucket, &object, &tag_list, &head_resp_headers))
+        || !aos_status_is_ok(aos_ret)) {
+      ret = OB_OSS_ERROR;
+      OB_LOG(WARN, "set object tag fail", K(ret), K(uri));
+      print_oss_info(aos_ret);
+    } else {
+      OB_LOG(INFO, "set object tag succ", K(uri));
+    }
+  }
+  return ret;
+}
+
 int ObStorageOssUtil::del_file(const common::ObString& uri, const common::ObString& storage_info)
 {
   int ret = OB_SUCCESS;
@@ -1238,22 +1325,17 @@ int ObStorageOssUtil::del_file(const common::ObString& uri, const common::ObStri
     OB_LOG(WARN, "failed to init storage_info", K(ret), K(storage_info));
   } else if (OB_FAIL(get_bucket_object_name(uri, bucket_str, object_str, allocator))) {
     OB_LOG(WARN, "bucket or object name is empty", K(ret), K(uri), K(bucket_str), K(object_str));
-  } else {
-    aos_string_t bucket;
-    aos_string_t object;
-    aos_str_set(&bucket, bucket_str.ptr());
-    aos_str_set(&object, object_str.ptr());
-    aos_table_t* resp_headers = NULL;
-    aos_status_t* aos_ret = NULL;
-
-    if (OB_ISNULL(aos_ret = oss_delete_object(oss_option_, &bucket, &object, &resp_headers)) ||
-        !aos_status_is_ok(aos_ret)) {
-      ret = OB_OSS_ERROR;
-      OB_LOG(WARN, "delete object fail", K(ret), K(uri));
-      print_oss_info(aos_ret);
-    } else {
-      OB_LOG(INFO, "delete object succ", K(uri));
+ } else if (ObIStorageUtil::DELETE == get_delete_mode()) {
+    if (OB_FAIL(delete_object(uri, bucket_str, object_str))) {
+      OB_LOG(WARN, "failed to delete object", K(ret), K(uri));
+    }
+  } else if (ObIStorageUtil::TAGGING == get_delete_mode()) {
+    if (OB_FAIL(tagging_object(uri, bucket_str, object_str))) {
+      OB_LOG(WARN, "failed to tagging file", K(ret), K(uri));
     }
+  } else {
+    ret = OB_INVALID_ARGUMENT; 
+    OB_LOG(WARN, "delete mode invalid", K(ret), K(uri)); 
   }
   // Finally reset to ensure that the interface can be called repeatedly
   reset();
diff --git a/deps/oblib/src/lib/restore/ob_storage_oss_base.h b/deps/oblib/src/lib/restore/ob_storage_oss_base.h
index 4d5001b0a6e4b8558354fb99bb125f97bcc46191..371ebd137e57d519b6868b64c4de7ca9804c3c54 100644
--- a/deps/oblib/src/lib/restore/ob_storage_oss_base.h
+++ b/deps/oblib/src/lib/restore/ob_storage_oss_base.h
@@ -96,6 +96,7 @@ public:
       char*& remote_md5, int64_t& file_length);
   int get_oss_file_length(const common::ObString& name, int64_t& file_length);
   void print_oss_info(aos_status_s* aos_ret);
+  int64_t get_delete_mode() {return delete_mode_;}
 
 protected:
   aos_pool_t* aos_pool_;
@@ -104,6 +105,7 @@ protected:
 private:
   int parse_oss_arg(const common::ObString& uri);
   static int set_oss_field(const char* info, char* field, const int64_t length);
+  int set_delete_mode(const char *parameter);
 
 private:
   bool is_inited_;
@@ -111,6 +113,7 @@ private:
   char oss_endpoint_[MAX_OSS_ENDPOINT_LENGTH];
   char oss_id_[MAX_OSS_ID_LENGTH];
   char oss_key_[MAX_OSS_KEY_LENGTH];
+  int64_t delete_mode_;
   int init_oss_endpoint();
   DISALLOW_COPY_AND_ASSIGN(ObStorageOssBase);
 };
@@ -209,6 +212,14 @@ public:
 
 private:
   int strtotime(const char* date_time, int64_t& time);
+  int tagging_object(
+      const common::ObString &uri,
+      const common::ObString &bucket_str,
+      const common::ObString &object_str);
+  int delete_object(
+      const common::ObString &uri,
+      const common::ObString &bucket_str,
+      const common::ObString &object_str);
 };
 
 class ObStorageOssAppendWriter : public ObStorageOssBase, public ObIStorageWriter {
diff --git a/src/sql/resolver/cmd/ob_alter_system_resolver.cpp b/src/sql/resolver/cmd/ob_alter_system_resolver.cpp
index f481754d776d1fb5bb4f21adc22dbb2fc3f92dfc..cb22ecf7468244b9c94aa62e000b40ac8091ea73 100644
--- a/src/sql/resolver/cmd/ob_alter_system_resolver.cpp
+++ b/src/sql/resolver/cmd/ob_alter_system_resolver.cpp
@@ -1514,6 +1514,14 @@ int check_backup_dest(const ObString& backup_dest)
     LOG_WARN("failed to print backup dest buf", K(ret), K(backup_dest));
   } else if (OB_FAIL(dest.set(backup_dest_buf))) {
     LOG_WARN("failed to set dest", K(ret), K(backup_dest_buf));
+  } else if (dest.is_nfs_storage() && 0 != strlen(dest.storage_info_)) {
+    ret = OB_NOT_SUPPORTED;
+    LOG_WARN("backup device is nfs, storage_info should be empty", K(ret), K_(dest.storage_info));
+    LOG_USER_ERROR(OB_NOT_SUPPORTED, "backup device is nfs, additional parameters are");
+  } else if (dest.is_nfs_storage() && strlen(dest.root_path_) != strlen(backup_dest_buf)) {
+    ret = OB_NOT_SUPPORTED;
+    LOG_WARN("backup device is nfs, backup dest should not set '?'", K(ret), K_(dest.storage_info));
+    LOG_USER_ERROR(OB_NOT_SUPPORTED, "backup device is nfs, setting '?' is"); 
   } else if (OB_FAIL(cluster_dest.set(dest, OB_START_INCARNATION))) {
     LOG_WARN("Failed to set cluster dest", K(ret), K(dest));
   } else if (OB_FAIL(backup_info_mgr.get_last_extern_log_archive_backup_info(
@@ -1698,6 +1706,14 @@ int check_backup_backup_dest(const ObString& backup_backup_dest)
     LOG_WARN("failed to set dest", K(ret), K(backup_dest_buf));
   } else if (OB_FAIL(dst_dest.set(backup_backup_dest_buf))) {
     LOG_WARN("failed to set dest", K(ret), K(backup_backup_dest_buf));
+  } else if (dst_dest.is_nfs_storage() && 0 != strlen(dst_dest.storage_info_)) {
+    ret = OB_NOT_SUPPORTED;
+    LOG_WARN("backup backup device is nfs, storage_info should be empty", K(ret), K_(dst_dest.storage_info));
+    LOG_USER_ERROR(OB_NOT_SUPPORTED, "backup backup device is nfs, additional parameters are"); 
+  } else if (dst_dest.is_nfs_storage() && strlen(dst_dest.root_path_) != strlen(backup_backup_dest_buf)) {
+    ret = OB_NOT_SUPPORTED;
+    LOG_WARN("backup backup device is nfs, backup backup dest should not set '?'", K(ret), K_(dst_dest.storage_info));
+    LOG_USER_ERROR(OB_NOT_SUPPORTED, "backup backup device is nfs, setting '?' is"); 
   } else if (dst_dest.is_cos_storage()) {
     ret = OB_NOT_SUPPORTED;
     LOG_WARN("backup backup do not support cos storage", KR(ret));