diff --git a/src/main/java/sirius/biz/storage/layer3/VirtualFile.java b/src/main/java/sirius/biz/storage/layer3/VirtualFile.java
index b93dde2e4..711b3de04 100644
--- a/src/main/java/sirius/biz/storage/layer3/VirtualFile.java
+++ b/src/main/java/sirius/biz/storage/layer3/VirtualFile.java
@@ -16,6 +16,7 @@
 import sirius.biz.storage.layer2.Blob;
 import sirius.biz.storage.util.Attempt;
 import sirius.biz.storage.util.StorageUtils;
+import sirius.kernel.Sirius;
 import sirius.kernel.async.TaskContext;
 import sirius.kernel.commons.Files;
 import sirius.kernel.commons.Streams;
@@ -82,7 +83,6 @@ public abstract class VirtualFile extends Composable implements Comparable<Virtu
     private static final String HANDLER_CONSUME_FILE_HANDLER = "consumeFileHandler";
     private static final String MESSAGE_KEY_LOAD_FROM_URL_FAILED = "$VirtualFile.loadFromUrlFailed";
     private static final String MESSAGE_KEY_LOAD_FROM_URL_DISABLED = "$VirtualFile.loadFromUrlDisabled";
-    private static final int NUMBER_OF_RETRIES_FOR_SERVICE_UNAVAILABLE = 3;
 
     protected String name;
     protected String description;
@@ -122,6 +122,9 @@ public abstract class VirtualFile extends Composable implements Comparable<Virtu
     @PriorityParts(RemoteFileResolver.class)
     private static List<RemoteFileResolver> remoteFileResolvers;
 
+    @ConfigValue("storage.layer3.retriesForServiceUnavailable")
+    private static int retriesForServiceUnavailable;
+
     /**
      * Internal constructor to create the "/" directory.
      */
@@ -1390,8 +1393,7 @@ public boolean performLoadFromUri(URI uri, FetchFromUrlMode mode) {
                 return false;
             }
 
-            HttpResponse<InputStream> response =
-                    requestFileFromUri(uri, mode, NUMBER_OF_RETRIES_FOR_SERVICE_UNAVAILABLE);
+            HttpResponse<InputStream> response = requestFileFromUri(uri, mode, retriesForServiceUnavailable);
 
             if (response.statusCode() == HttpResponseStatus.NOT_MODIFIED.code()) {
                 tryTouch();
@@ -1431,14 +1433,14 @@ private HttpResponse<InputStream> requestFileFromUri(URI uri, FetchFromUrlMode m
 
             if (retries > 0) {
                 // Wait 200ms, 700ms, 1200ms...
-                Wait.millis(200 + (NUMBER_OF_RETRIES_FOR_SERVICE_UNAVAILABLE - retries) * 500);
+                Wait.millis(200 + (retriesForServiceUnavailable - retries) * 500);
                 return requestFileFromUri(uri, mode, retries - 1);
             }
 
             throw new IOException(Strings.apply("The server responded with status %s (%s) after %s retries!",
                                                 HttpResponseStatus.valueOf(response.statusCode()).toString(),
                                                 response.statusCode(),
-                                                NUMBER_OF_RETRIES_FOR_SERVICE_UNAVAILABLE));
+                                                retriesForServiceUnavailable));
         }
 
         if (response.statusCode() >= 400) {
diff --git a/src/main/resources/component-biz.conf b/src/main/resources/component-biz.conf
index d543583c2..4a77ca8bb 100644
--- a/src/main/resources/component-biz.conf
+++ b/src/main/resources/component-biz.conf
@@ -1367,6 +1367,10 @@ storage {
         # to determine if the file-extension of a file-url contains the effective filename or if the path
         # is just a script and we need to inspect the ContentDisposition (etc.) to obtain the actual file name
         serverSidedScriptingExtensions = [ "php", "php3", "php4", "php5", "cgi", "asp", "aspx", "jsp", "jspx", "cfm", "cfml", "xml" ]
+
+        # Defines the number of retries for service unavailable responses (HTTP 503).
+        # The first retry will wait 200ms with each consequent retry waiting 500ms longer than the previous one.
+        retriesForServiceUnavailable = 3
     }
 
 }