diff --git a/java/org/slub/rosetta/dps/repository/plugin/storage/nfs/SLUBStoragePlugin.java b/java/org/slub/rosetta/dps/repository/plugin/storage/nfs/SLUBStoragePlugin.java
index f3ec09a1c0a7b013c6a79c53b7dfcf01209faa31..243533b7c94252f0131ed88a2b70ff17ccf700c4 100644
--- a/java/org/slub/rosetta/dps/repository/plugin/storage/nfs/SLUBStoragePlugin.java
+++ b/java/org/slub/rosetta/dps/repository/plugin/storage/nfs/SLUBStoragePlugin.java
@@ -25,6 +25,7 @@ import com.exlibris.core.infra.common.util.IOUtil;
 import com.exlibris.core.infra.svc.api.scriptRunner.ExecExternalProcess;
 import com.exlibris.core.sdk.storage.containers.StoredEntityMetaData;
 import com.exlibris.core.sdk.storage.handler.AbstractStorageHandler;
+import com.exlibris.core.sdk.storage.handler.StorageHandler;
 import com.exlibris.core.sdk.storage.handler.StorageUtil;
 import com.exlibris.core.sdk.utils.FileUtil;
 import com.exlibris.digitool.common.dnx.DnxDocument;
@@ -73,26 +74,22 @@ import java.util.Map;
  */
 public class SLUBStoragePlugin extends AbstractStorageHandler {
     private static final ExLogger log = ExLogger.getExLogger(SLUBStoragePlugin.class);
-    private static String DIR_ROOT = "DIR_ROOT"; /** {@inheritDoc} */
-    private static String FILES_HANDLING_METHOD = "move";
-    private static int BLOCK_SIZE = 32*1024;
 
-    public SLUBStoragePlugin() {
-        log.info("SLUBStoragePlugin instantiated (using DIR_ROOT="+DIR_ROOT+" BLOCK_SIZE="+BLOCK_SIZE);
+    private String getDirRoot () {
+        return parameters.get("DIR_ROOT");
     }
-
-    @Override
-    public void init(Map<String, String> params) {
-        super.init(params);
-        DIR_ROOT = parameters.get("DIR_ROOT");
+    private int getBlockSize () {
+        int blockSize = 32*1024;
         try {
-            BLOCK_SIZE = Integer.parseInt(this.parameters.get("BLOCK_SIZE"));
+            blockSize = Integer.parseInt(this.parameters.get("BLOCK_SIZE"));
         } catch (NumberFormatException e) {
             log.error("Could not convert BLOCK_SIZE string to int, " + e);
-            BLOCK_SIZE = 32*1024;
+            blockSize = 32*1024;
         }
-        FILES_HANDLING_METHOD = this.parameters.get("FILES_HANDLING_METHOD");
-        log.info("SLUBStoragePlugin initialized (using DIR_ROOT="+DIR_ROOT+" BLOCK_SIZE="+BLOCK_SIZE);
+        return blockSize;
+    }
+    private String getFilesHandlingMethod () {
+        return this.parameters.get("FILES_HANDLING_METHOD");
     }
 
     private String throughput(long starttime_in_ms, long endtime_in_ms, String filename) {
@@ -113,6 +110,7 @@ public class SLUBStoragePlugin extends AbstractStorageHandler {
     }
     public boolean checkFixity(List<Fixity> fixities, String storedEntityIdentifier) throws Exception {
         log.info("SLUBStoragePlugin.checkFixity()");
+        /* todo: only absolute paths */
         return checkFixity(fixities, storedEntityIdentifier, true);
     }
 
@@ -191,7 +189,7 @@ public class SLUBStoragePlugin extends AbstractStorageHandler {
         boolean result = fixity.getResult();
         is.close();
         long endtime = System.currentTimeMillis();
-        var pathname = (isRelativePath ? DIR_ROOT : "") + storedEntityIdentifier;
+        var pathname = (isRelativePath ? getDirRoot() : "") + storedEntityIdentifier;
         log.info("SLUBStoragePlugin.checkFixity() pathname='"+ pathname + "' result=" + result + " (builtin " + throughput(starttime, endtime, pathname)+ ")");
         return result;
     }
@@ -232,7 +230,7 @@ public class SLUBStoragePlugin extends AbstractStorageHandler {
         log.info("SLUBStoragePlugin.checkFixityByPlugin() newvalue=" + fixity.getValue());
         boolean result = fixity.getResult();
         long endtime = System.currentTimeMillis();
-        var pathname = (isRelativePath ? DIR_ROOT : "") + storedEntityIdentifier;
+        var pathname = (isRelativePath ? getDirRoot() : "") + storedEntityIdentifier;
         log.info("SLUBStoragePlugin.checkFixityByPlugin() pathname='" + pathname + "' result=" + result + " (plugins " + throughput(starttime, endtime, pathname)+ ")");
         return result;
     }
@@ -240,7 +238,7 @@ public class SLUBStoragePlugin extends AbstractStorageHandler {
     public boolean deleteEntity(String storedEntityIdentifier)
     {
         log.info("SLUBStoragePlugin.deleteEntity() storedEntityIdentifier='" + storedEntityIdentifier + "'");
-        File file = new File(DIR_ROOT + storedEntityIdentifier);
+        File file = new File(getDirRoot() + storedEntityIdentifier);
         try
         {
             return file.delete();
@@ -261,7 +259,7 @@ public class SLUBStoragePlugin extends AbstractStorageHandler {
     public String getFullFilePath(String storedEntityIdentifier)
     {
         log.info("SLUBStoragePlugin.getFullFilePath() with '" + storedEntityIdentifier + "'");
-        return DIR_ROOT + storedEntityIdentifier;
+        return getDirRoot() + storedEntityIdentifier;
     }
 
     public InputStream retrieveEntity(String storedEntityIdentifier)
@@ -274,16 +272,16 @@ public class SLUBStoragePlugin extends AbstractStorageHandler {
             throws IOException
     {
         log.info("SLUBStoragePlugin.retrieveEntity() with '" + storedEntityIdentifier + "' isrelative=" + isRelative);
-        var pathname = (isRelative ? DIR_ROOT : "") + storedEntityIdentifier;
+        var pathname = (isRelative ? getDirRoot() : "") + storedEntityIdentifier;
         // TODO: 64k (1MB) buffer set
         // OLD, without buffering, but working: InputStream foo =  java.nio.file.Files.newInputStream( Paths.get( pathname));
-        return new BufferedInputStream( java.nio.file.Files.newInputStream(Paths.get( pathname)), BLOCK_SIZE);
+        return new BufferedInputStream( java.nio.file.Files.newInputStream(Paths.get( pathname)), getBlockSize());
     }
     public byte[] retrieveEntityByRange(String storedEntityIdentifier, long start, long end) throws Exception
     {
         log.info("SLUBStoragePlugin.retrieveEntitybyRange() with '" + storedEntityIdentifier + "' start=" + start + " end=" + end);
         /* try-with-ressource block, no close if failed needed */
-        try (RandomAccessFile file = new RandomAccessFile(DIR_ROOT + storedEntityIdentifier, "r"))
+        try (RandomAccessFile file = new RandomAccessFile(getDirRoot() + storedEntityIdentifier, "r"))
         {
             long starttime = System.currentTimeMillis();
             file.seek(start);
@@ -350,7 +348,7 @@ public class SLUBStoragePlugin extends AbstractStorageHandler {
                 try (OutputStream output = java.nio.file.Files.newOutputStream( Paths.get( destFilePath)))
                 {
                     long starttime = System.currentTimeMillis();
-                    IOUtil.copy(is, output, BLOCK_SIZE);
+                    IOUtil.copy(is, output, getBlockSize());
                     long endtime = System.currentTimeMillis();
                     log.info("SLUBStoragePlugin.storeEntity() try copy (IOUtil.copy) was successfull (" + throughput(starttime, endtime, destFilePath)+ ")" );
                 }
@@ -368,7 +366,7 @@ public class SLUBStoragePlugin extends AbstractStorageHandler {
             throws IOException
     {
         log.info("SLUBStoragePlugin.copyStream()");
-        String filesHandlingMethod = FILES_HANDLING_METHOD;
+        String filesHandlingMethod = getFilesHandlingMethod();
         String srcPath = storedEntityMetadata.getCurrentFilePath();
         log.info("SLUBStoragePlugin.copyStream() destPath='" + destPath + "'");
         log.info("SLUBStoragePlugin.copyStream() srcPath='" + srcPath + "'");
@@ -492,7 +490,7 @@ public class SLUBStoragePlugin extends AbstractStorageHandler {
      */
     File getStreamDirectory(String path, String fileName) {
         log.info("SLUBStoragePlugin.getStreamDirectory path='" + path + "' fileName='" + fileName + "'");
-        File newDir = new File(DIR_ROOT + File.separator + path);
+        File newDir = new File(getDirRoot() + File.separator + path);
         log.debug("SLUBStoragePlugin.getStreamDirectory newDir.getAbsolutePath()=" + newDir.getAbsolutePath());
         boolean arecreated = newDir.mkdirs();
         log.debug("SLUBStoragePlugin.getStreamDirectory newDir.mkdirs(), directories are created:" + arecreated);