diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index fa26e6aa5..f5a6ddbae 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -17,6 +17,12 @@
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+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.2.3.tgz",
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+      "resolved": "https://registry.npmjs.org/autoprefixer-core/-/autoprefixer-core-5.2.1.tgz",
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@@ -455,6 +752,23 @@
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+        "wordwrap": {
+          "version": "0.0.2",
+          "from": "wordwrap@0.0.2",
+          "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.2.tgz",
+          "dev": true
+        },
+        "yargs": {
+          "version": "3.10.0",
+          "from": "yargs@>=3.10.0 <3.11.0",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+          "dev": true
+        }
+      }
+    },
+    "uglify-save-license": {
+      "version": "0.4.1",
+      "from": "uglify-save-license@>=0.4.1 <0.5.0",
+      "resolved": "https://registry.npmjs.org/uglify-save-license/-/uglify-save-license-0.4.1.tgz",
+      "dev": true
+    },
+    "uglify-to-browserify": {
+      "version": "1.0.2",
+      "from": "uglify-to-browserify@>=1.0.0 <1.1.0",
+      "resolved": "https://registry.npmjs.org/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz",
+      "dev": true
+    },
     "uid-safe": {
       "version": "2.1.3",
       "from": "uid-safe@2.1.3",
@@ -2369,21 +4773,63 @@
       "from": "uid2@>=0.0.0 <0.1.0",
       "resolved": "https://registry.npmjs.org/uid2/-/uid2-0.0.3.tgz"
     },
+    "unc-path-regex": {
+      "version": "0.1.2",
+      "from": "unc-path-regex@>=0.1.0 <0.2.0",
+      "resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
+      "dev": true
+    },
     "underscore": {
       "version": "1.8.3",
       "from": "underscore@>=1.7.0 <2.0.0",
       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz"
     },
+    "uniq": {
+      "version": "1.0.1",
+      "from": "uniq@>=1.0.1 <2.0.0",
+      "resolved": "https://registry.npmjs.org/uniq/-/uniq-1.0.1.tgz",
+      "dev": true
+    },
+    "uniqid": {
+      "version": "4.1.1",
+      "from": "uniqid@>=4.0.0 <5.0.0",
+      "resolved": "https://registry.npmjs.org/uniqid/-/uniqid-4.1.1.tgz",
+      "dev": true
+    },
+    "uniqs": {
+      "version": "2.0.0",
+      "from": "uniqs@>=2.0.0 <3.0.0",
+      "resolved": "https://registry.npmjs.org/uniqs/-/uniqs-2.0.0.tgz",
+      "dev": true
+    },
+    "unique-stream": {
+      "version": "1.0.0",
+      "from": "unique-stream@>=1.0.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/unique-stream/-/unique-stream-1.0.0.tgz",
+      "dev": true
+    },
     "unpipe": {
       "version": "1.0.0",
       "from": "unpipe@1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz"
     },
+    "urix": {
+      "version": "0.1.0",
+      "from": "urix@>=0.1.0 <0.2.0",
+      "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
+      "dev": true
+    },
     "url": {
       "version": "0.10.3",
       "from": "url@0.10.3",
       "resolved": "https://registry.npmjs.org/url/-/url-0.10.3.tgz"
     },
+    "user-home": {
+      "version": "1.1.1",
+      "from": "user-home@>=1.1.1 <2.0.0",
+      "resolved": "https://registry.npmjs.org/user-home/-/user-home-1.1.1.tgz",
+      "dev": true
+    },
     "util-deprecate": {
       "version": "1.0.2",
       "from": "util-deprecate@>=1.0.1 <1.1.0",
@@ -2406,6 +4852,12 @@
       "from": "utils-merge@1.0.0",
       "resolved": "http://registry.npmjs.org/utils-merge/-/utils-merge-1.0.0.tgz"
     },
+    "v8flags": {
+      "version": "2.0.11",
+      "from": "v8flags@>=2.0.2 <3.0.0",
+      "resolved": "https://registry.npmjs.org/v8flags/-/v8flags-2.0.11.tgz",
+      "dev": true
+    },
     "valid-url": {
       "version": "1.0.9",
       "from": "valid-url@>=1.0.9 <2.0.0",
@@ -2443,6 +4895,12 @@
         }
       }
     },
+    "vendors": {
+      "version": "1.0.1",
+      "from": "vendors@>=1.0.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/vendors/-/vendors-1.0.1.tgz",
+      "dev": true
+    },
     "verror": {
       "version": "1.3.6",
       "from": "verror@1.3.6",
@@ -2453,16 +4911,77 @@
       "from": "vinyl@>=0.5.0 <0.6.0",
       "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-0.5.3.tgz"
     },
+    "vinyl-fs": {
+      "version": "0.3.14",
+      "from": "vinyl-fs@>=0.3.0 <0.4.0",
+      "resolved": "https://registry.npmjs.org/vinyl-fs/-/vinyl-fs-0.3.14.tgz",
+      "dev": true,
+      "dependencies": {
+        "clone": {
+          "version": "0.2.0",
+          "from": "clone@>=0.2.0 <0.3.0",
+          "resolved": "https://registry.npmjs.org/clone/-/clone-0.2.0.tgz",
+          "dev": true
+        },
+        "graceful-fs": {
+          "version": "3.0.11",
+          "from": "graceful-fs@>=3.0.0 <4.0.0",
+          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-3.0.11.tgz",
+          "dev": true
+        },
+        "isarray": {
+          "version": "0.0.1",
+          "from": "isarray@0.0.1",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
+          "dev": true
+        },
+        "readable-stream": {
+          "version": "1.0.34",
+          "from": "readable-stream@>=1.0.33-1 <1.1.0-0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "dev": true
+        },
+        "strip-bom": {
+          "version": "1.0.0",
+          "from": "strip-bom@>=1.0.0 <2.0.0",
+          "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-1.0.0.tgz",
+          "dev": true
+        },
+        "through2": {
+          "version": "0.6.5",
+          "from": "through2@>=0.6.1 <0.7.0",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
+          "dev": true
+        },
+        "vinyl": {
+          "version": "0.4.6",
+          "from": "vinyl@>=0.4.0 <0.5.0",
+          "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-0.4.6.tgz",
+          "dev": true
+        }
+      }
+    },
     "vinyl-sourcemaps-apply": {
       "version": "0.2.1",
       "from": "vinyl-sourcemaps-apply@>=0.2.0 <0.3.0",
       "resolved": "https://registry.npmjs.org/vinyl-sourcemaps-apply/-/vinyl-sourcemaps-apply-0.2.1.tgz"
     },
+    "walkdir": {
+      "version": "0.0.11",
+      "from": "walkdir@>=0.0.11 <0.0.12",
+      "resolved": "https://registry.npmjs.org/walkdir/-/walkdir-0.0.11.tgz"
+    },
     "when": {
       "version": "2.0.1",
       "from": "when@>=2.0.1 <2.1.0",
       "resolved": "http://registry.npmjs.org/when/-/when-2.0.1.tgz"
     },
+    "whet.extend": {
+      "version": "0.9.9",
+      "from": "whet.extend@>=0.9.9 <0.10.0",
+      "resolved": "https://registry.npmjs.org/whet.extend/-/whet.extend-0.9.9.tgz",
+      "dev": true
+    },
     "which": {
       "version": "1.2.12",
       "from": "which@^1.2.12",
@@ -2478,6 +4997,12 @@
       "from": "wide-align@^1.1.0",
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.0.tgz"
     },
+    "window-size": {
+      "version": "0.1.0",
+      "from": "window-size@0.1.0",
+      "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.0.tgz",
+      "dev": true
+    },
     "winston": {
       "version": "2.1.1",
       "from": "winston@>=2.1.0 <2.2.0",
@@ -2547,6 +5072,20 @@
       "from": "yallist@^2.0.0",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.0.0.tgz"
     },
+    "yargs": {
+      "version": "3.32.0",
+      "from": "yargs@>=3.15.0 <4.0.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.32.0.tgz",
+      "dev": true,
+      "dependencies": {
+        "window-size": {
+          "version": "0.1.4",
+          "from": "window-size@>=0.1.4 <0.2.0",
+          "resolved": "https://registry.npmjs.org/window-size/-/window-size-0.1.4.tgz",
+          "dev": true
+        }
+      }
+    },
     "yargs-parser": {
       "version": "2.4.1",
       "from": "yargs-parser@^2.4.1",
@@ -2558,6 +5097,23 @@
           "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz"
         }
       }
+    },
+    "zip-stream": {
+      "version": "1.1.1",
+      "from": "zip-stream@>=1.1.0 <2.0.0",
+      "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-1.1.1.tgz",
+      "dependencies": {
+        "readable-stream": {
+          "version": "2.2.9",
+          "from": "readable-stream@^2.0.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.2.9.tgz"
+        },
+        "string_decoder": {
+          "version": "1.0.0",
+          "from": "string_decoder@~1.0.0",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.0.tgz"
+        }
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 0949f6675..65ff936c6 100644
--- a/package.json
+++ b/package.json
@@ -14,10 +14,10 @@
   ],
   "dependencies": {
     "@sindresorhus/df": "^2.1.0",
+    "archiver": "https://registry.npmjs.org/archiver/-/archiver-1.3.0.tgz",
     "async": "^2.1.4",
     "aws-sdk": "^2.1.46",
     "body-parser": "^1.13.1",
-    "checksum": "^0.1.1",
     "cloudron-manifestformat": "^2.8.0",
     "connect-ensure-login": "^0.1.1",
     "connect-lastmile": "^0.1.0",
@@ -63,7 +63,7 @@
     "split": "^1.0.0",
     "superagent": "^1.8.3",
     "supererror": "^0.7.1",
-    "tar-fs": "^1.15.2",
+    "tar-fs": "https://registry.npmjs.org/tar-fs/-/tar-fs-1.15.2.tgz",
     "tldjs": "^1.6.2",
     "underscore": "^1.7.0",
     "valid-url": "^1.0.9",
diff --git a/src/backups.js b/src/backups.js
index 5d8b91999..5d0de949b 100644
--- a/src/backups.js
+++ b/src/backups.js
@@ -8,7 +8,8 @@ exports = module.exports = {
     getPaged: getPaged,
     getByAppIdPaged: getByAppIdPaged,
 
-    getRestoreUrl: getRestoreUrl,
+    getDownloadStream: getDownloadStream,
+
     getRestoreConfig: getRestoreConfig,
 
     ensureBackup: ensureBackup,
@@ -19,8 +20,6 @@ exports = module.exports = {
 
     backupBoxAndApps: backupBoxAndApps,
 
-    getLocalDownloadPath: getLocalDownloadPath,
-
     removeBackup: removeBackup
 };
 
@@ -147,30 +146,6 @@ function getRestoreConfig(backupId, callback) {
     });
 }
 
-function getRestoreUrl(backupId, callback) {
-    assert.strictEqual(typeof backupId, 'string');
-    assert.strictEqual(typeof callback, 'function');
-
-    settings.getBackupConfig(function (error, backupConfig) {
-        if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
-
-        api(backupConfig.provider).getRestoreUrl(backupConfig, backupId, function (error, result) {
-            if (error) return callback(error);
-
-            var obj = {
-                id: backupId,
-                url: result.url,
-                backupKey: backupConfig.key,
-                sha1: result.sha1 || null       // not supported by all backends
-            };
-
-            debug('getRestoreUrl: id:%s url:%s backupKey:%s sha1:%s', obj.id, obj.url, obj.backupKey, obj.sha1);
-
-            callback(null, obj);
-        });
-    });
-}
-
 function copyLastBackup(app, manifest, prefix, callback) {
     assert.strictEqual(typeof app, 'object');
     assert.strictEqual(typeof app.lastBackupId, 'string');
@@ -179,27 +154,17 @@ function copyLastBackup(app, manifest, prefix, callback) {
     assert.strictEqual(typeof callback, 'function');
 
     var timestamp = (new Date()).toISOString().replace(/[T.]/g, '-').replace(/[:Z]/g,'');
-    var toFilenameArchive = util.format('%s/app_%s_%s_v%s.tar.gz', prefix, app.id, timestamp, manifest.version);
-    var toFilenameConfig = util.format('%s/app_%s_%s_v%s.json', prefix, app.id, timestamp, manifest.version);
+    var newBackupId = util.format('%s/app_%s_%s_v%s.tar.gz', prefix, app.id, timestamp, manifest.version);
 
     settings.getBackupConfig(function (error, backupConfig) {
         if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-        debug('copyLastBackup: copying archive %s to %s', app.lastBackupId, toFilenameArchive);
+        debug('copyLastBackup: copying backup %s to %s', app.lastBackupId, newBackupId);
 
-        api(backupConfig.provider).copyObject(backupConfig, app.lastBackupId, toFilenameArchive, function (error) {
+        api(backupConfig.provider).copyBackup(backupConfig, app.lastBackupId, newBackupId, function (error) {
             if (error) return callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error));
 
-            // TODO change that logic by adjusting app.lastBackupId to not contain the file type
-            var configFileId = app.lastBackupId.slice(0, -'.tar.gz'.length) + '.json';
-
-            debug('copyLastBackup: copying config %s to %s', configFileId, toFilenameConfig);
-
-            api(backupConfig.provider).copyObject(backupConfig, configFileId, toFilenameConfig, function (error) {
-                if (error) return callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error));
-
-                return callback(null, toFilenameArchive);
-            });
+            callback(null, newBackupId);
         });
     });
 }
@@ -209,29 +174,23 @@ function backupBoxWithAppBackupIds(appBackupIds, prefix, callback) {
     assert.strictEqual(typeof prefix, 'string');
 
     var timestamp = (new Date()).toISOString().replace(/[T.]/g, '-').replace(/[:Z]/g,'');
-    var filebase = util.format('%s/box_%s_v%s', prefix, timestamp, config.version());
-    var filename = filebase + '.tar.gz';
+    var backupId = util.format('%s/box_%s_v%s', prefix, timestamp, config.version());
 
     settings.getBackupConfig(function (error, backupConfig) {
         if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-        api(backupConfig.provider).getBoxBackupDetails(backupConfig, filename, function (error, result) {
-            if (error) return callback(error);
+        shell.sudo('backupBox', [ BACKUP_BOX_CMD, backupId ], function (error) {
+            if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-            debug('backupBoxWithAppBackupIds: backup details %j', result);
+            debug('backupBoxWithAppBackupIds: success');
 
-            shell.sudo('backupBox', [ BACKUP_BOX_CMD ].concat(result.backupScriptArguments), function (error) {
+            backupdb.add({ id: backupId, version: config.version(), type: backupdb.BACKUP_TYPE_BOX, dependsOn: appBackupIds }, function (error) {
                 if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-                debug('backupBoxWithAppBackupIds: success');
-
-                backupdb.add({ id: filename, version: config.version(), type: backupdb.BACKUP_TYPE_BOX, dependsOn: appBackupIds }, function (error) {
-                    if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
-
-                    api(backupConfig.provider).backupDone(filename, null /* app */, appBackupIds, function (error) {
-                        if (error) return callback(error);
-                        callback(null, filename);
-                    });
+                // FIXME this is only needed for caas, is it really???
+                api(backupConfig.provider).backupDone(backupId, null /* app */, appBackupIds, function (error) {
+                    if (error) return callback(error);
+                    callback(null, backupId);
                 });
             });
         });
@@ -254,31 +213,21 @@ function createNewAppBackup(app, manifest, prefix, callback) {
     assert.strictEqual(typeof callback, 'function');
 
     var timestamp = (new Date()).toISOString().replace(/[T.]/g, '-').replace(/[:Z]/g,'');
-    var filebase = util.format('%s/app_%s_%s_v%s', prefix, app.id, timestamp, manifest.version);
-    var configFilename = filebase + '.json', dataFilename = filebase + '.tar.gz';
+    var backupId = util.format('%s/app_%s_%s_v%s', prefix, app.id, timestamp, config.version());
 
-    settings.getBackupConfig(function (error, backupConfig) {
+    // FIXME move addon backup into backuptask
+    async.series([
+        addons.backupAddons.bind(null, app, manifest.addons),
+        shell.sudo.bind(null, 'backupApp', [ BACKUP_APP_CMD, backupId, app.id ])
+    ], function (error) {
         if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-        api(backupConfig.provider).getAppBackupDetails(backupConfig, app.id, dataFilename, configFilename, function (error, result) {
-            if (error) return callback(error);
+        debugApp(app, 'createNewAppBackup: %s done', backupId);
 
-            debug('createNewAppBackup: backup details %j', result);
+        backupdb.add({ id: backupId, version: manifest.version, type: backupdb.BACKUP_TYPE_APP, dependsOn: [ ] }, function (error) {
+            if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-            async.series([
-                addons.backupAddons.bind(null, app, manifest.addons),
-                shell.sudo.bind(null, 'backupApp', [ BACKUP_APP_CMD ].concat(result.backupScriptArguments))
-            ], function (error) {
-                if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
-
-                debugApp(app, 'createNewAppBackup: %s done', dataFilename);
-
-                backupdb.add({ id: dataFilename, version: manifest.version, type: backupdb.BACKUP_TYPE_APP, dependsOn: [ ] }, function (error) {
-                    if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
-
-                    callback(null, dataFilename);
-                });
-            });
+            callback(null, backupId);
         });
     });
 }
@@ -438,32 +387,34 @@ function restoreApp(app, addonsToRestore, backupId, callback) {
     assert.strictEqual(typeof callback, 'function');
     assert(app.lastBackupId);
 
-    getRestoreUrl(backupId, function (error, result) {
-        if (error) return callback(error);
+    settings.getBackupConfig(function (error, backupConfig) {
+        if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-        debugApp(app, 'restoreApp: restoreUrl:%s', result.url);
+        var directoryMapping = [{
+            source: '/',
+            destination: path.join(paths.APPS_DATA_DIR, app.id)
+        }];
 
-        shell.sudo('restoreApp', [ RESTORE_APP_CMD,  app.id, result.url, result.backupKey, result.sessionToken ], function (error) {
-            if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
-
-            addons.restoreAddons(app, addonsToRestore, callback);
-        });
+        async.series([
+            api(backupConfig.provider).restore.bind(null, backupConfig, backupId, directoryMapping),
+            addons.restoreAddons.bind(null, app, addonsToRestore)
+        ], callback);
     });
 }
 
-function getLocalDownloadPath(backupId, callback) {
+function getDownloadStream(backupId, callback) {
     assert.strictEqual(typeof backupId, 'string');
     assert.strictEqual(typeof callback, 'function');
 
     settings.getBackupConfig(function (error, backupConfig) {
         if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-        api(backupConfig.provider).getLocalFilePath(backupConfig, backupId, function (error, result) {
+        api(backupConfig.provider).getDownloadStream(backupConfig, backupId, function (error, result) {
             if (error) return callback(error);
 
-            debug('getLocalDownloadPath: id:%s path:%s', backupId, result.filePath);
+            debug('getDownloadStream: %s', backupId);
 
-            callback(null, result.filePath);
+            callback(null, result);
         });
     });
 }
diff --git a/src/backuptask.js b/src/backuptask.js
new file mode 100755
index 000000000..965fba37b
--- /dev/null
+++ b/src/backuptask.js
@@ -0,0 +1,106 @@
+#!/usr/bin/env node
+
+'use strict';
+
+require('supererror')({ splatchError: true });
+
+// remove timestamp from debug() based output
+require('debug').formatArgs = function formatArgs(args) {
+    args[0] = this.namespace + ' ' + args[0];
+};
+
+var assert = require('assert'),
+    database = require('./database.js'),
+    debug = require('debug')('box:backuptask'),
+    path = require('path'),
+    paths = require('./paths.js'),
+    filesystem = require('./storage/filesystem.js'),
+    caas = require('./storage/caas.js'),
+    s3 = require('./storage/s3.js'),
+    BackupsError = require('./backups.js').BackupsError,
+    settings = require('./settings.js');
+
+// choose which storage backend we use for test purpose we use s3
+function api(provider) {
+    switch (provider) {
+        case 'caas': return caas;
+        case 's3': return s3;
+        case 'filesystem': return filesystem;
+        default: return null;
+    }
+}
+
+function initialize(callback) {
+    assert.strictEqual(typeof callback, 'function');
+
+    database.initialize(callback);
+}
+
+function backupApp(backupId, appId, callback) {
+    assert.strictEqual(typeof backupId, 'string');
+    assert.strictEqual(typeof appId, 'string');
+    assert.strictEqual(typeof callback, 'function');
+
+    debug('Start app backup with id %s for %s', backupId, appId);
+
+    settings.getBackupConfig(function (error, backupConfig) {
+        if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
+
+        var backupMapping = [{
+            source: path.join(paths.APPS_DATA_DIR, appId),
+            destination: '/'
+        }];
+
+        api(backupConfig.provider).backup(backupConfig, backupId, backupMapping, callback);
+    });
+}
+
+function backupBox(backupId, callback) {
+    assert.strictEqual(typeof backupId, 'string');
+    assert.strictEqual(typeof callback, 'function');
+
+    debug('Start box backup with id %s', backupId);
+
+    settings.getBackupConfig(function (error, backupConfig) {
+        if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
+
+        var backupMapping = [{
+            source: paths.BOX_DATA_DIR,
+            destination: '/box/'
+        }, {
+            source: path.join(paths.PLATFORM_DATA_DIR, 'mail'),
+            destination: '/mail/'
+        }];
+
+        api(backupConfig.provider).backup(backupConfig, backupId, backupMapping, callback);
+    });
+}
+
+if (require.main === module) {
+    var backupId = process.argv[2];
+    var appId = process.argv[3];
+
+    if (appId) debug('Backuptask for the app %s with id %s', appId, backupId);
+    else debug('Backuptask for the whole Cloudron with id %s', backupId);
+
+    process.on('SIGTERM', function () {
+        process.exit(0);
+    });
+
+    initialize(function (error) {
+        if (error) throw error;
+
+        function resultHandler(error) {
+            if (error) debug('Backuptask completed with error', error);
+
+            debug('Backuptask completed');
+
+            // https://nodejs.org/api/process.html are exit codes used by node. apps.js uses the value below
+            // to check apptask crashes
+            process.exit(error ? 50 : 0);
+        }
+
+        if (appId) backupApp(backupId, appId, resultHandler);
+        else backupBox(backupId, resultHandler);
+    });
+}
diff --git a/src/routes/backups.js b/src/routes/backups.js
index 7bac1ec21..d01c235de 100644
--- a/src/routes/backups.js
+++ b/src/routes/backups.js
@@ -3,7 +3,6 @@
 exports = module.exports = {
     get: get,
     create: create,
-    createDownloadUrl: createDownloadUrl,
     download: download
 };
 
@@ -44,22 +43,13 @@ function create(req, res, next) {
     });
 }
 
-function createDownloadUrl(req, res, next) {
-    assert.strictEqual(typeof req.params.backupId, 'string');
-
-    backups.getRestoreUrl(req.params.backupId, function (error, result) {
-        if (error) return next(new HttpError(500, error));
-
-        next(new HttpSuccess(200, result));
-    });
-}
-
 function download(req, res, next) {
     assert.strictEqual(typeof req.params.backupId, 'string');
 
-    backups.getLocalDownloadPath(req.params.backupId, function (error, result) {
+    backups.getDownloadStream(req.params.backupId, function (error, result) {
+        if (error && error.reason === BackupsError.NOT_FOUND) return next(new HttpError(404, error.message));
         if (error) return next(new HttpError(500, error));
 
-        res.sendFile(result);
+        result.pipe(res);
     });
 }
diff --git a/src/scripts/backupapp.sh b/src/scripts/backupapp.sh
index b3ab40140..3b13aa843 100755
--- a/src/scripts/backupapp.sh
+++ b/src/scripts/backupapp.sh
@@ -2,6 +2,8 @@
 
 set -eu -o pipefail
 
+readonly script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
 if [[ $EUID -ne 0 ]]; then
     echo "This script should be run as root." >&2
     exit 1
@@ -15,92 +17,16 @@ fi
 readonly APPS_DATA_DIR="${HOME}/appsdata"
 
 # verify argument count
-if [[ "$1" == "s3" && $# -lt 9 ]]; then
-    echo "Usage: backupapp.sh s3 <appId> <s3 config url> <s3 data url> <access key id> <access key> <region> <endpoint> <password> [session token]"
+if [[ $# -lt 2 ]]; then
+    echo "Usage: backupbox.sh <backupId> <appId>"
     exit 1
 fi
 
-if [[ "$1" == "filesystem" && $# -lt 6 ]]; then
-    echo "Usage: backupapp.sh filesystem <appId> <backupFolder> <configFileName> <dataFileName> <password>"
-    exit 1
-fi
-
-
 # extract arguments
+readonly backup_id="$1"
 readonly app_id="$2"
 
-if [[ "$1" == "s3" ]]; then
-    # env vars used by the awscli
-    readonly s3_config_url="$3"
-    readonly s3_data_url="$4"
-    export AWS_ACCESS_KEY_ID="$5"
-    export AWS_SECRET_ACCESS_KEY="$6"
-    export AWS_DEFAULT_REGION="$7"
-    readonly endpoint_url="$8"
-    readonly password="$9"
+echo "Running app backup task"
+DEBUG="box*" ${script_dir}/../backuptask.js "${backup_id}" "${app_id}"
 
-    if [ $# -gt 9 ]; then
-        export AWS_SESSION_TOKEN="${10}"
-    fi
-elif [[ "$1" == "filesystem" ]]; then
-    readonly backup_folder="$3"
-    readonly backup_config_fileName="$4"
-    readonly backup_data_fileName="$5"
-    readonly password="$6"
-fi
-
-# perform backup
-readonly app_data_dir="${APPS_DATA_DIR}/${app_id}"
-readonly tar_bin="/home/yellowtent/box/helper/tarjs"
-
-# will be checked at the end
-try=0
-
-if [[ "$1" == "s3" ]]; then
-    # may be empty
-    optional_args=""
-    if [ -n "${endpoint_url}" ]; then
-        optional_args="--endpoint-url ${endpoint_url}"
-    fi
-
-    # Upload config.json first because uploading tarball might take a lot of time, leading to token expiry
-    for try in `seq 1 5`; do
-        echo "Uploading config.json to ${s3_config_url} (try ${try})"
-        error_log=$(mktemp)
-
-        # use aws instead of curl because curl will always read entire stream memory to set Content-Length
-        # aws will do multipart upload
-        if cat "${app_data_dir}/config.json" \
-               |  aws ${optional_args} s3 cp - "${s3_config_url}" 2>"${error_log}"; then
-            break
-        fi
-        cat "${error_log}" && rm "${error_log}"
-    done
-
-    for try in `seq 1 5`; do
-        echo "Uploading backup to ${s3_data_url} (try ${try})"
-        error_log=$(mktemp)
-
-        if ${tar_bin} "${app_data_dir}" . \
-               | openssl aes-256-cbc -e -pass "pass:${password}" \
-               |  aws ${optional_args} s3 cp - "${s3_data_url}" 2>"${error_log}"; then
-            break
-        fi
-        cat "${error_log}" && rm "${error_log}"
-    done
-elif [[ "$1" == "filesystem" ]]; then
-    mkdir -p $(dirname "${backup_folder}/${backup_config_fileName}")
-
-    echo "Storing backup config to ${backup_folder}/${backup_config_fileName}"
-    cat "${app_data_dir}/config.json" > "${backup_folder}/${backup_config_fileName}"
-
-    echo "Storing backup data to ${backup_folder}/${backup_data_fileName}"
-    ${tar_bin} "${app_data_dir}" . | openssl aes-256-cbc -e -pass "pass:${password}" > "${backup_folder}/${backup_data_fileName}"
-fi
-
-if [[ ${try} -eq 5 ]]; then
-    echo "Backup failed uploading backup tarball"
-    exit 3
-else
-    echo "Backup successful"
-fi
+echo "App backup successful"
diff --git a/src/scripts/backupbox.sh b/src/scripts/backupbox.sh
index 84eb8d3d8..4c955af08 100755
--- a/src/scripts/backupbox.sh
+++ b/src/scripts/backupbox.sh
@@ -2,6 +2,10 @@
 
 set -eu -o pipefail
 
+readonly script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+BOX_DATA_DIR="${HOME}/boxdata"
+
 if [[ $EUID -ne 0 ]]; then
     echo "This script should be run as root." >&2
     exit 1
@@ -12,78 +16,19 @@ if [[ $# == 1 && "$1" == "--check" ]]; then
     exit 0
 fi
 
-
 # verify argument count
-if [[ "$1" == "s3" && $# -lt 7 ]]; then
-    echo "Usage: backupbox.sh s3 <s3 url> <access key id> <access key> <region> <endpoint> <password> [session token]"
-    exit 1
-fi
-
-if [[ "$1" == "filesystem" && $# -lt 4 ]]; then
-    echo "Usage: backupbox.sh filesystem <backupFolder> <fileName> <password>"
+if [[ $# -lt 1 ]]; then
+    echo "Usage: backupbox.sh <backupId>"
     exit 1
 fi
 
 # extract arguments
-if [[ "$1" == "s3" ]]; then
-    # env vars used by the awscli
-    readonly s3_url="$2"
-    export AWS_ACCESS_KEY_ID="$3"
-    export AWS_SECRET_ACCESS_KEY="$4"
-    export AWS_DEFAULT_REGION="$5"
-    readonly endpoint_url="$6"
-    readonly password="$7"
-
-    if [ $# -gt 7 ]; then
-        export AWS_SESSION_TOKEN="$8"
-    fi
-elif [[ "$1" == "filesystem" ]]; then
-    readonly backup_folder="$2"
-    readonly backup_fileName="$3"
-    readonly password="$4"
-fi
-
-# perform backup
-BOX_DATA_DIR="${HOME}/boxdata"
+readonly backup_id="$1"
 
 echo "Creating MySQL dump"
 mysqldump -u root -ppassword --single-transaction --routines --triggers box > "${BOX_DATA_DIR}/box.mysqldump"
 
-# will be checked at the end
-try=0
+echo "Running backup task"
+DEBUG="box*" ${script_dir}/../backuptask.js "${backup_id}"
 
-if [[ "$1" == "s3" ]]; then
-    for try in `seq 1 5`; do
-        echo "Uploading backup to ${s3_url} (try ${try})"
-        error_log=$(mktemp)
-
-        # may be empty
-        optional_args=""
-        if [ -n "${endpoint_url}" ]; then
-            optional_args="--endpoint-url ${endpoint_url}"
-        fi
-
-        # use aws instead of curl because curl will always read entire stream memory to set Content-Length
-        # aws will do multipart upload
-        if tar -czf - -C "${HOME}" --transform="s,^boxdata/\?,box/," --transform="s,^platformdata/mail/\?,mail/," --show-transformed-names boxdata platformdata/mail \
-               | openssl aes-256-cbc -e -pass "pass:${password}" \
-               | aws ${optional_args} s3 cp - "${s3_url}" 2>"${error_log}"; then
-            break
-        fi
-        cat "${error_log}" && rm "${error_log}"
-    done
-elif [[ "$1" == "filesystem" ]]; then
-    echo "Storing backup to ${backup_folder}/${backup_fileName}"
-
-    mkdir -p $(dirname "${backup_folder}/${backup_fileName}")
-
-    tar -czf - -C "${HOME}"  --transform="s,^boxdata/\?,box/," --transform="s,^platformdata/mail/\?,mail/," --show-transformed-names boxdata platformdata/mail \
-        | openssl aes-256-cbc -e -pass "pass:${password}" > "${backup_folder}/${backup_fileName}"
-fi
-
-if [[ ${try} -eq 5 ]]; then
-    echo "Backup failed"
-    exit 3
-else
-    echo "Backup successful"
-fi
+echo "Backup successful"
diff --git a/src/scripts/createappdir.sh b/src/scripts/createappdir.sh
index a9d6bfa0d..c9cb2ee41 100755
--- a/src/scripts/createappdir.sh
+++ b/src/scripts/createappdir.sh
@@ -24,6 +24,7 @@ if [[ "${BOX_ENV}" == "cloudron" ]]; then
     # only the top level ownership is changed because containers own the subdirectores
     # and will chown them as necessary
     chown yellowtent:yellowtent "${app_data_dir}"
+    chown yellowtent:yellowtent "${app_data_dir}/data"
 else
     readonly app_data_dir="${HOME}/.cloudron_test/appsdata/$1"
     mkdir -p "${app_data_dir}/data"
diff --git a/src/server.js b/src/server.js
index e45847e34..3f6ab1ab3 100644
--- a/src/server.js
+++ b/src/server.js
@@ -219,7 +219,6 @@ function initializeExpressSync() {
     // backup routes
     router.get ('/api/v1/backups', settingsScope, routes.user.requireAdmin, routes.backups.get);
     router.post('/api/v1/backups', settingsScope, routes.user.requireAdmin, routes.backups.create);
-    router.post('/api/v1/backups/:backupId/download_url', appsScope, routes.user.requireAdmin, routes.backups.createDownloadUrl);
     router.get ('/api/v1/backups/:backupId/download', appsScope, routes.user.requireAdmin, routes.backups.download);
 
     // disable server socket "idle" timeout. we use the timeout middleware to handle timeouts on a route level
diff --git a/src/storage/filesystem.js b/src/storage/filesystem.js
index 87128bd36..9d19c439f 100644
--- a/src/storage/filesystem.js
+++ b/src/storage/filesystem.js
@@ -1,14 +1,13 @@
 'use strict';
 
 exports = module.exports = {
-    getBoxBackupDetails: getBoxBackupDetails,
-    getAppBackupDetails: getAppBackupDetails,
+    backup: backup,
+    restore: restore,
 
-    getRestoreUrl: getRestoreUrl,
     getAppRestoreConfig: getAppRestoreConfig,
-    getLocalFilePath: getLocalFilePath,
+    getDownloadStream: getDownloadStream,
 
-    copyObject: copyObject,
+    copyBackup: copyBackup,
     removeBackup: removeBackup,
 
     backupDone: backupDone,
@@ -19,111 +18,167 @@ exports = module.exports = {
 var assert = require('assert'),
     async = require('async'),
     BackupsError = require('../backups.js').BackupsError,
-    checksum = require('checksum'),
+    debug = require('debug')('box:storage/filesystem'),
     fs = require('fs'),
     path = require('path'),
+    mkdirp = require('mkdirp'),
+    once = require('once'),
     safe = require('safetydance'),
     SettingsError = require('../settings.js').SettingsError,
     shell = require('../shell.js'),
-    util = require('util');
+    tar = require('tar-fs'),
+    archiver = require('archiver');
 
 var FALLBACK_BACKUP_FOLDER = '/var/backups';
 var RMBACKUP_CMD = path.join(__dirname, '../scripts/rmbackup.sh');
 
-function getBoxBackupDetails(apiConfig, id, callback) {
+function backup(apiConfig, backupId, sourceDirectories, callback) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof id, 'string');
+    assert.strictEqual(typeof backupId, 'string');
+    assert(Array.isArray(sourceDirectories));
     assert.strictEqual(typeof callback, 'function');
 
-    var backupFolder = apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER;
+    callback = once(callback);
 
-    var details = {
-        backupScriptArguments: [ 'filesystem', backupFolder, id, apiConfig.key ]
-    };
+    var backupFilePath = path.join(apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER, backupId + '.tar.gz');
 
-    callback(null, details);
-}
+    debug('[%s] backup: %j -> %s', backupId, sourceDirectories, backupFilePath);
 
-function getAppBackupDetails(apiConfig, appId, dataId, configId, callback) {
-    assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof appId, 'string');
-    assert.strictEqual(typeof dataId, 'string');
-    assert.strictEqual(typeof configId, 'string');
-    assert.strictEqual(typeof callback, 'function');
+    mkdirp(path.dirname(backupFilePath), function (error) {
+        if (error) return callback(error);
 
-    var backupFolder = apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER;
+        var fileStream = fs.createWriteStream(backupFilePath);
+        var archive = archiver('tar', { gzip: true });
 
-    var details = {
-        backupScriptArguments: [ 'filesystem', appId, backupFolder, configId, dataId, apiConfig.key ]
-    };
+        fileStream.on('error', function (error) {
+            console.error('[%s] backup: out stream error.', error);
+        });
 
-    callback(null, details);
-}
+        archive.on('error', function (error) {
+            console.error('[%s] backup: archive stream error.', error);
+        });
 
-function getRestoreUrl(apiConfig, filename, callback) {
-    assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof filename, 'string');
-    assert.strictEqual(typeof callback, 'function');
+        fileStream.on('close', function () {
+            debug('[%s] backup: done.', backupId);
+            callback();
+        });
 
-    var backupFolder = apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER;
-    var restoreUrl = 'file://' + path.join(backupFolder, filename);
-
-    checksum.file(path.join(backupFolder, filename), function (error, result) {
-        if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, util.format('Failed to calculate checksum:', error)));
-
-        callback(null, { url: restoreUrl, sha1: result });
+        archive.pipe(fileStream);
+        sourceDirectories.forEach(function (directoryMap) {
+            archive.directory(directoryMap.source, directoryMap.destination);
+        });
+        archive.finalize();
     });
 }
 
+function restore(apiConfig, backupId, destinationDirectories, callback) {
+    assert.strictEqual(typeof apiConfig, 'object');
+    assert.strictEqual(typeof backupId, 'string');
+    assert(Array.isArray(destinationDirectories));
+    assert.strictEqual(typeof callback, 'function');
+
+    var sourceFilePath = path.join(apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER, backupId + '.tar.gz');
+
+    debug('[%s] restore: %s -> %j', backupId, sourceFilePath, destinationDirectories);
+
+    if (!fs.existsSync(sourceFilePath)) return callback(new BackupsError(BackupsError.NOT_FOUND, 'backup file does not exist'));
+
+    async.eachSeries(destinationDirectories, function (directory, callback) {
+        debug('[%s] restore: directory %s -> %s', backupId, directory.source, directory.destination);
+
+        mkdirp(directory, function (error) {
+            if (error) return callback(error);
+
+            var fileStream = fs.createReadStream(sourceFilePath);
+            var extract = tar.extract(directory);
+
+            fileStream.on('error', function (error) {
+                console.error('[%s] restore: file stream error.', error);
+                callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
+            });
+
+            extract.on('error', function (error) {
+                console.error('[%s] restore: extract stream error.', error);
+                callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
+            });
+
+            extract.on('end', function () {
+                debug('[%s] restore: directory %s done.', backupId, directory.source);
+                callback();
+            });
+
+            fileStream.pipe(extract);
+        });
+    }, function (error) {
+        if (error) return callback(error);
+
+        debug('[%s] restore: done', backupId);
+
+        callback();
+    });
+}
+
+function getDownloadStream(apiConfig, backupId, callback) {
+    assert.strictEqual(typeof apiConfig, 'object');
+    assert.strictEqual(typeof backupId, 'string');
+    assert.strictEqual(typeof callback, 'function');
+
+    var backupFilePath = path.join(apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER, backupId);
+
+    debug('[%s] getDownloadStream: %s %s', backupId, backupId, backupFilePath);
+
+    if (!fs.existsSync(backupFilePath)) return callback(new BackupsError(BackupsError.NOT_FOUND, 'backup file does not exist'));
+
+    var stream = fs.createReadStream(backupFilePath);
+    callback(null, stream);
+}
+
 function getAppRestoreConfig(apiConfig, backupId, callback) {
     assert.strictEqual(typeof apiConfig, 'object');
     assert.strictEqual(typeof backupId, 'string');
     assert.strictEqual(typeof callback, 'function');
 
-    var backupFolder = apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER;
-    var configFilename = backupId.replace(/\.tar\.gz$/, '.json');
+    callback = once(callback);
 
-    var restoreConfig = safe.require(path.join(backupFolder, configFilename));
-    if (!restoreConfig) return callback(new BackupsError(BackupsError.NOT_FOUND, 'No app backup config found for ' + configFilename));
+    var sourceFilePath = path.join(apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER, backupId + '.json');
+
+    debug('[%s] getAppRestoreConfig: %s', backupId, sourceFilePath);
+
+    if (!fs.existsSync(sourceFilePath)) return callback(new BackupsError(BackupsError.NOT_FOUND, 'restore config file does not exist'));
+
+    var restoreConfig = safe.require(sourceFilePath);
+    if (!restoreConfig) {
+        console.error('[%s] getAppRestoreConfig: failed', safe.error);
+        return callback(new BackupsError(BackupsError.INTERNAL_ERROR, safe.error));
+    }
 
     callback(null, restoreConfig);
 }
 
-function getLocalFilePath(apiConfig, filename, callback) {
+function copyBackup(apiConfig, oldBackupId, newBackupId, callback) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof filename, 'string');
+    assert.strictEqual(typeof oldBackupId, 'string');
+    assert.strictEqual(typeof newBackupId, 'string');
     assert.strictEqual(typeof callback, 'function');
 
-    var backupFolder = apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER;
+    callback = once(callback);
 
-    callback(null, { filePath: path.join(backupFolder, filename) });
-}
+    var oldBackupFilePath = path.join(apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER, oldBackupId + '.tar.gz');
+    var newBackupFilePath = path.join(apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER, newBackupId + '.tar.gz');
 
-function copyObject(apiConfig, from, to, callback) {
-    assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof from, 'string');
-    assert.strictEqual(typeof to, 'string');
-    assert.strictEqual(typeof callback, 'function');
+    // FIXME this most likely has a permissions issue as this process runs as yellowtent not root
+    mkdirp(path.dirname(newBackupFilePath), function (error) {
+        if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-    var calledBack = false;
-    function done (error) {
-        if (!calledBack) callback(error);
-        calledBack = true;
-    }
+        var readStream = fs.createReadStream(oldBackupFilePath);
+        var writeStream = fs.createWriteStream(newBackupFilePath);
 
-    var backupFolder = apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER;
-    var readStream = fs.createReadStream(path.join(backupFolder, from));
-    var writeStream = fs.createWriteStream(path.join(backupFolder, to));
+        readStream.on('error', callback);
+        writeStream.on('error', callback);
+        writeStream.on('close', callback);
 
-    readStream.on('error', done);
-    writeStream.on('error', done);
-
-    writeStream.on('close', function () {
-        // avoid passing arguments
-        done(null);
+        readStream.pipe(writeStream);
     });
-
-    readStream.pipe(writeStream);
 }
 
 function removeBackup(apiConfig, backupId, appBackupIds, callback) {
@@ -132,11 +187,8 @@ function removeBackup(apiConfig, backupId, appBackupIds, callback) {
     assert(Array.isArray(appBackupIds));
     assert.strictEqual(typeof callback, 'function');
 
-    var backupFolder = apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER;
-    var appBackupJSONFiles = appBackupIds.map(function (id) { return id.replace(/\.tar\.gz$/, '.json'); });
-
-    async.each([backupId].concat(appBackupIds).concat(appBackupJSONFiles), function (id, callback) {
-        var filePath = path.join(backupFolder, id);
+    async.each([backupId].concat(appBackupIds), function (id, callback) {
+        var filePath = path.join(apiConfig.backupFolder || FALLBACK_BACKUP_FOLDER, id + '.tar.gz');
 
         shell.sudo('deleteBackup', [ RMBACKUP_CMD, filePath ], function (error) {
             if (error) console.error('Unable to remove %s. Not fatal.', filePath, safe.error);
@@ -162,4 +214,3 @@ function backupDone(filename, app, appBackupIds, callback) {
 
     callback();
 }
-
diff --git a/src/storage/interface.js b/src/storage/interface.js
index 00dc76fba..4a0ddaf5a 100644
--- a/src/storage/interface.js
+++ b/src/storage/interface.js
@@ -7,8 +7,9 @@
 // -------------------------------------------
 
 exports = module.exports = {
-    getBoxBackupDetails: getBoxBackupDetails,
-    getAppBackupDetails: getAppBackupDetails,
+    backupBegin: backupBegin,
+    backupDirectory: backupDirectory,
+    backupFinalize: backupFinalize,
 
     getRestoreUrl: getRestoreUrl,
     getAppRestoreConfig: getAppRestoreConfig,
@@ -24,26 +25,34 @@ exports = module.exports = {
 
 var assert = require('assert');
 
-function getBoxBackupDetails(apiConfig, id, callback) {
+function backupBegin(apiConfig, backupId, callback) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof id, 'string');
+    assert.strictEqual(typeof backupId, 'string');
     assert.strictEqual(typeof callback, 'function');
 
-    // Result: { backupScriptArguments: [] }
-    // The resulting array consists of string passed down 1to1 to the backupbox.sh
+    // Result: none
 
     callback(new Error('not implemented'));
 }
 
-function getAppBackupDetails(apiConfig, appId, dataId, configId, callback) {
+function backupDirectory(apiConfig, backupId, source, destination, callback) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof appId, 'string');
-    assert.strictEqual(typeof dataId, 'string');
-    assert.strictEqual(typeof configId, 'string');
+    assert.strictEqual(typeof backupId, 'string');
+    assert.strictEqual(typeof source, 'string');
+    assert.strictEqual(typeof destination, 'string');
     assert.strictEqual(typeof callback, 'function');
 
-    // Result: { backupScriptArguments: [] }
-    // The resulting array consists of string passed down 1to1 to the backupapp.sh
+    // Result: none
+
+    callback(new Error('not implemented'));
+}
+
+function backupFinalize(apiConfig, backupId, callback) {
+    assert.strictEqual(typeof apiConfig, 'object');
+    assert.strictEqual(typeof backupId, 'string');
+    assert.strictEqual(typeof callback, 'function');
+
+    // Result: none
 
     callback(new Error('not implemented'));
 }