diff --git a/workload/htx_test.py.data/htx_isst.yml b/workload/htx_test.py.data/htx_isst.yml
new file mode 100644
index 000000000..88d1f3cf2
--- /dev/null
+++ b/workload/htx_test.py.data/htx_isst.yml
@@ -0,0 +1,9 @@
+time_limit: 24
+time_unit: 'h'
+mdt: !mux
+    bu:
+        mdt_file: 'mdt.bu'
+    less:
+        mdt_file: 'mdt.less'
+    all:
+        mdt_file: 'mdt.all'