diff --git a/migrations/20170423032116-settings-set-default-retentionSecs.js b/migrations/20170423032116-settings-set-default-retentionSecs.js
index f8f1d5df4..a1f19f943 100644
--- a/migrations/20170423032116-settings-set-default-retentionSecs.js
+++ b/migrations/20170423032116-settings-set-default-retentionSecs.js
@@ -7,7 +7,7 @@ exports.up = function(db, callback) {
         var backupConfig = JSON.parse(results[0].value);
         if (backupConfig.provider === 'filesystem') {
             backupConfig.retentionSecs = 2 * 24 * 60 * 60; // 2 days
-        } else {
+        } else { // CaaS and S3
             backupConfig.retentionSecs = -1;
         }
         db.runSql('UPDATE settings SET value=? WHERE name="backup_config"', [ JSON.stringify(backupConfig) ], callback);
diff --git a/src/storage/caas.js b/src/storage/caas.js
index 155c5e667..fb8923341 100644
--- a/src/storage/caas.js
+++ b/src/storage/caas.js
@@ -84,7 +84,7 @@ function backup(apiConfig, backupId, sourceDirectories, callback) {
         var s3 = new AWS.S3(credentials);
         s3.upload(params, function (error) {
             if (error) {
-                console.error('[%s] backup: s3 upload error.', backupId, error);
+                debug('[%s] backup: s3 upload error.', backupId, error);
                 return callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error));
             }
 
@@ -123,7 +123,7 @@ function restore(apiConfig, backupId, destination, callback) {
             // TODO ENOENT for the mock, fix upstream!
             if (error.code === 'NoSuchKey' || error.code === 'ENOENT') return callback(new BackupsError(BackupsError.NOT_FOUND));
 
-            console.error('[%s] restore: s3 stream error.', backupId, error);
+            debug('[%s] restore: s3 stream error.', backupId, error);
             callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
         });
 
@@ -150,7 +150,7 @@ function copyBackup(apiConfig, oldBackupId, newBackupId, callback) {
         s3.copyObject(params, function (error) {
             if (error && error.code === 'NoSuchKey') return callback(new BackupsError(BackupsError.NOT_FOUND));
             if (error) {
-                console.error('copyBackup: s3 copy error.', error);
+                debug('copyBackup: s3 copy error.', error);
                 return callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error));
             }
 
@@ -180,7 +180,9 @@ function removeBackups(apiConfig, backupIds, callback) {
 
         var s3 = new AWS.S3(credentials);
         s3.deleteObjects(params, function (error) {
-            if (error) console.error('Unable to remove %s. Not fatal.', params.Key, error);
+            if (error) debug('Unable to remove %s. Not fatal.', params.Key, error);
+            else debug('removeBackups: Deleted: %j Errors: %j', data.Deleted, data.Errors);
+
             callback(null);
         });
     });
diff --git a/src/storage/filesystem.js b/src/storage/filesystem.js
index 297d299a0..b4e60cd05 100644
--- a/src/storage/filesystem.js
+++ b/src/storage/filesystem.js
@@ -54,7 +54,7 @@ function backup(apiConfig, backupId, sourceDirectories, callback) {
         var fileStream = fs.createWriteStream(backupFilePath);
 
         fileStream.on('error', function (error) {
-            console.error('[%s] backup: out stream error.', backupId, error);
+            debug('[%s] backup: out stream error.', backupId, error);
             callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
         });
 
@@ -90,7 +90,7 @@ function restore(apiConfig, backupId, destination, callback) {
     var fileStream = fs.createReadStream(sourceFilePath);
 
     fileStream.on('error', function (error) {
-        console.error('restore: file stream error.', error);
+        debug('restore: file stream error.', error);
         callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
     });
 
@@ -117,12 +117,12 @@ function copyBackup(apiConfig, oldBackupId, newBackupId, callback) {
         var writeStream = fs.createWriteStream(newFilePath);
 
         readStream.on('error', function (error) {
-            console.error('copyBackup: read stream error.', error);
+            debug('copyBackup: read stream error.', error);
             callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
         });
 
         writeStream.on('error', function (error) {
-            console.error('copyBackup: write stream error.', error);
+            debug('copyBackup: write stream error.', error);
             callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
         });
 
diff --git a/src/storage/s3.js b/src/storage/s3.js
index 50899d072..73ccc5eba 100644
--- a/src/storage/s3.js
+++ b/src/storage/s3.js
@@ -91,7 +91,7 @@ function backup(apiConfig, backupId, sourceDirectories, callback) {
         var s3 = new AWS.S3(credentials);
         s3.upload(params, function (error) {
             if (error) {
-                console.error('[%s] backup: s3 upload error.', backupId, error);
+                debug('[%s] backup: s3 upload error.', backupId, error);
                 return callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
             }
 
@@ -131,7 +131,7 @@ function restore(apiConfig, backupId, destination, callback) {
             // TODO ENOENT for the mock, fix upstream!
             if (error.code === 'NoSuchKey' || error.code === 'ENOENT') return callback(new BackupsError(BackupsError.NOT_FOUND));
 
-            console.error('[%s] restore: s3 stream error.', backupId, error);
+            debug('[%s] restore: s3 stream error.', backupId, error);
             callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
         });
 
@@ -158,7 +158,7 @@ function copyBackup(apiConfig, oldBackupId, newBackupId, callback) {
         s3.copyObject(params, function (error) {
             if (error && error.code === 'NoSuchKey') return callback(new BackupsError(BackupsError.NOT_FOUND, 'Old backup not found'));
             if (error) {
-                console.error('copyBackup: s3 copy error.', error);
+                debug('copyBackup: s3 copy error.', error);
                 return callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
             }
 
@@ -187,8 +187,10 @@ function removeBackups(apiConfig, backupIds, callback) {
         });
 
         var s3 = new AWS.S3(credentials);
-        s3.deleteObjects(params, function (error) {
-            if (error) console.error('Unable to remove %s. Not fatal.', params.Key, error);
+        s3.deleteObjects(params, function (error, data) {
+            if (error) debug('removeBackups: Unable to remove %s. Not fatal.', params.Key, error);
+            else debug('removeBackups: Deleted: %j Errors: %j', data.Deleted, data.Errors);
+
             callback(null);
         });
     });
diff --git a/src/storage/targz.js b/src/storage/targz.js
index a6b40da93..b0b62d94b 100644
--- a/src/storage/targz.js
+++ b/src/storage/targz.js
@@ -35,17 +35,17 @@ function create(sourceDirectories, key, outStream, callback) {
     var progressStream = progress({ time: 10000 }); // display a progress every 10 seconds
 
     pack.on('error', function (error) {
-        console.error('backup: tar stream error.', error);
+        debug('backup: tar stream error.', error);
         callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
     });
 
     gzip.on('error', function (error) {
-        console.error('backup: gzip stream error.', error);
+        debug('backup: gzip stream error.', error);
         callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
     });
 
     encrypt.on('error', function (error) {
-        console.error('backup: encrypt stream error.', error);
+        debug('backup: encrypt stream error.', error);
         callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
     });
 
@@ -83,17 +83,17 @@ function extract(inStream, isOldFormat, destination, key, callback) {
         });
 
         decrypt.on('error', function (error) {
-            console.error('restore: decrypt stream error.', error);
+            debug('restore: decrypt stream error.', error);
             callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
         });
 
         gunzip.on('error', function (error) {
-            console.error('restore: gunzip stream error.', error);
+            debug('restore: gunzip stream error.', error);
             callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
         });
 
         extract.on('error', function (error) {
-            console.error('restore: extract stream error.', error);
+            debug('restore: extract stream error.', error);
             callback(new BackupsError(BackupsError.EXTERNAL_ERROR, error.message));
         });