diff --git a/src/backups.js b/src/backups.js
index 4ac72d00c..70b01c389 100644
--- a/src/backups.js
+++ b/src/backups.js
@@ -114,33 +114,6 @@ function getByAppIdPaged(page, perPage, appId, callback) {
     });
 }
 
-function getAppBackupCredentials(app, manifest, callback) {
-    assert.strictEqual(typeof app, 'object');
-    assert(manifest && typeof manifest === 'object');
-    assert.strictEqual(typeof callback, 'function');
-
-    var now = new Date();
-    var filebase = util.format('appbackup_%s_%s-v%s', app.id, now.toISOString(), manifest.version);
-    var configFilename = filebase + '.json', dataFilename = filebase + '.tar.gz';
-
-    settings.getBackupConfig(function (error, backupConfig) {
-        if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
-
-        api(backupConfig.provider).getBackupCredentials(backupConfig, function (error, result) {
-            if (error) return callback(error);
-
-            result.id = dataFilename;
-            result.s3ConfigUrl = 's3://' + backupConfig.bucket + '/' + backupConfig.prefix + '/' + configFilename;
-            result.s3DataUrl = 's3://' + backupConfig.bucket + '/' + backupConfig.prefix + '/' + dataFilename;
-            result.backupKey = backupConfig.key;
-
-            debug('getAppBackupCredentials: %j', result);
-
-            callback(null, result);
-        });
-    });
-}
-
 // backupId is the s3 filename. appbackup_%s_%s-v%s.tar.gz
 function getRestoreConfig(backupId, callback) {
     assert.strictEqual(typeof backupId, 'string');
@@ -298,31 +271,31 @@ function createNewAppBackup(app, manifest, callback) {
     assert(manifest && typeof manifest === 'object');
     assert.strictEqual(typeof callback, 'function');
 
-    getAppBackupCredentials(app, manifest, function (error, result) {
-        if (error) return callback(error);
+    var now = new Date();
+    var filebase = util.format('appbackup_%s_%s-v%s', app.id, now.toISOString(), manifest.version);
+    var configFilename = filebase + '.json', dataFilename = filebase + '.tar.gz';
 
-        debugApp(app, 'createNewAppBackup: backup url:%s backup config url:%s', result.s3DataUrl, result.s3ConfigUrl);
+    settings.getBackupConfig(function (error, backupConfig) {
+        if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
 
-        var args;
-        if (result.provider === 'filesystem') {
-            args = [ 'filesystem', '/tmp/backups', result.id + '.json', result.id, result.backupKey ];
-        } else {
-            args = [ 's3', app.id, result.s3ConfigUrl, result.s3DataUrl, result.accessKeyId, result.secretAccessKey, result.region, result.backupKey ];
-            if (result.sessionToken) args.push(result.sessionToken);
-        }
+        api(backupConfig.provider).getAppBackupDetails(backupConfig, app.id, dataFilename, configFilename, function (error, result) {
+            if (error) return callback(error);
 
-        async.series([
-            addons.backupAddons.bind(null, app, manifest.addons),
-            shell.sudo.bind(null, 'backupApp', [ BACKUP_APP_CMD ].concat(args))
-        ], function (error) {
-            if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
+            debug('createNewAppBackup: backup details %j', result);
 
-            debugApp(app, 'createNewAppBackup: %s done', result.id);
-
-            backupdb.add({ id: result.id, version: manifest.version, type: backupdb.BACKUP_TYPE_APP, dependsOn: [ ] }, function (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));
 
-                callback(null, result.id);
+                debugApp(app, 'createNewAppBackup: %s done', result.id);
+
+                backupdb.add({ id: result.id, version: manifest.version, type: backupdb.BACKUP_TYPE_APP, dependsOn: [ ] }, function (error) {
+                    if (error) return callback(new BackupsError(BackupsError.INTERNAL_ERROR, error));
+
+                    callback(null, result.id);
+                });
             });
         });
     });
diff --git a/src/scripts/backupapp.sh b/src/scripts/backupapp.sh
index 4a542e891..646991dd6 100755
--- a/src/scripts/backupapp.sh
+++ b/src/scripts/backupapp.sh
@@ -17,20 +17,20 @@ readonly DATA_DIR="${HOME}/data"
 # verify argument count
 if [[ "$1" == "s3" && $# -lt 8 ]]; then
     echo "Usage: backupapp.sh s3 <appId> <s3 config url> <s3 data url> <access key id> <access key> <region> <password> [session token]"
-    echo "Usage: backupapp.sh filesystem <backupFolder> <configFileName> <dataFileName> <password>"
     exit 1
 fi
 
-if [[ "$1" == "filesystem" && $# -lt 5 ]]; then
-    echo "Usage: backupapp.sh filesystem <backupFolder> <configFileName> <dataFileName> <password>"
+if [[ "$1" == "filesystem" && $# -lt 6 ]]; then
+    echo "Usage: backupapp.sh filesystem <appId> <backupFolder> <configFileName> <dataFileName> <password>"
     exit 1
 fi
 
 
 # extract arguments
+readonly app_id="$2"
+
 if [[ "$1" == "s3" ]]; then
     # env vars used by the awscli
-    readonly app_id="$2"
     readonly s3_config_url="$3"
     readonly s3_data_url="$4"
     export AWS_ACCESS_KEY_ID="$5"
@@ -44,10 +44,10 @@ if [[ "$1" == "s3" ]]; then
 fi
 
 if [[ "$1" == "filesystem" ]]; then
-    readonly backup_folder="$2"
-    readonly backup_config_fileName="$3"
-    readonly backup_data_fileName="$4"
-    readonly password="$5"
+    readonly backup_folder="$3"
+    readonly backup_config_fileName="$4"
+    readonly backup_data_fileName="$5"
+    readonly password="$6"
 fi
 
 # perform backup
diff --git a/src/storage/caas.js b/src/storage/caas.js
index 2d1051da8..c428dfbd2 100644
--- a/src/storage/caas.js
+++ b/src/storage/caas.js
@@ -2,6 +2,8 @@
 
 exports = module.exports = {
     getBackupDetails: getBackupDetails,
+    getAppBackupDetails: getAppBackupDetails,
+
     getAllPaged: getAllPaged,
 
     getRestoreUrl: getRestoreUrl,
@@ -59,6 +61,28 @@ function getBackupDetails(apiConfig, id, callback) {
     });
 }
 
+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, '');
+    assert.strictEqual(typeof callback, 'function');
+
+    getBackupCredentials(apiConfig, function (error, result) {
+        if (error) return callback(error);
+
+        var s3DataUrl = 's3://' + apiConfig.bucket + '/' + apiConfig.prefix + '/' + dataId;
+        var s3ConfigUrl = 's3://' + apiConfig.bucket + '/' + apiConfig.prefix + '/' + configId;
+        var region = apiConfig.region || 'us-east-1';
+
+        var details = {
+            backupScriptArguments: [ 's3', appId, s3ConfigUrl, s3DataUrl, apiConfig.accessKeyId, apiConfig.secretAccessKey, region, apiConfig.key, result.sessionToken ]
+        };
+
+        callback(null, details);
+    });
+}
+
 function getAllPaged(apiConfig, page, perPage, callback) {
     assert.strictEqual(typeof apiConfig, 'object');
     assert.strictEqual(typeof page, 'number');
diff --git a/src/storage/filesystem.js b/src/storage/filesystem.js
index b0a983443..a14495adc 100644
--- a/src/storage/filesystem.js
+++ b/src/storage/filesystem.js
@@ -2,6 +2,8 @@
 
 exports = module.exports = {
     getBackupDetails: getBackupDetails,
+    getAppBackupDetails: getAppBackupDetails,
+
     getAllPaged: getAllPaged,
 
     getRestoreUrl: getRestoreUrl,
@@ -25,6 +27,22 @@ function getBackupDetails(apiConfig, id, callback) {
     callback(null, details);
 }
 
+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, '');
+    assert.strictEqual(typeof callback, 'function');
+
+    var backupFolder = apiConfig.backupFolder || '/tmp/backups';
+
+    var details = {
+        backupScriptArguments: [ 'filesystem', appId, backupFolder, configId, dataId, apiConfig.key ]
+    };
+
+    callback(null, details);
+}
+
 function getAllPaged(apiConfig, page, perPage, callback) {
     assert.strictEqual(typeof apiConfig, 'object');
     assert.strictEqual(typeof page, 'number');
diff --git a/src/storage/s3.js b/src/storage/s3.js
index a9ecd39d9..d11c74754 100644
--- a/src/storage/s3.js
+++ b/src/storage/s3.js
@@ -2,6 +2,8 @@
 
 exports = module.exports = {
     getBackupDetails: getBackupDetails,
+    getAppBackupDetails: getAppBackupDetails,
+
     getAllPaged: getAllPaged,
 
     getRestoreUrl: getRestoreUrl,
@@ -45,6 +47,24 @@ function getBackupDetails(apiConfig, id, callback) {
     callback(null, details);
 }
 
+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, '');
+    assert.strictEqual(typeof callback, 'function');
+
+    var s3DataUrl = 's3://' + apiConfig.bucket + '/' + apiConfig.prefix + '/' + dataId;
+    var s3ConfigUrl = 's3://' + apiConfig.bucket + '/' + apiConfig.prefix + '/' + configId;
+    var region = apiConfig.region || 'us-east-1';
+
+    var details = {
+        backupScriptArguments: [ 's3', appId, s3ConfigUrl, s3DataUrl, apiConfig.accessKeyId, apiConfig.secretAccessKey, region, apiConfig.key ]
+    };
+
+    callback(null, details);
+}
+
 function getAllPaged(apiConfig, page, perPage, callback) {
     assert.strictEqual(typeof apiConfig, 'object');
     assert.strictEqual(typeof page, 'number');