diff --git a/classes/cluster/ceph-ha/ceph/osd.yml b/classes/cluster/ceph-ha/ceph/osd.yml
index 44a05a4..958c05a 100644
--- a/classes/cluster/ceph-ha/ceph/osd.yml
+++ b/classes/cluster/ceph-ha/ceph/osd.yml
@@ -8,15 +8,15 @@
       crush_parent: ${_param:ceph_crush_parent}
 #      crush_update: false
 #      copy_admin_key: true
-      bluestore_block_db_size: 10073741824
+      bluestore_block_db_size: 900000000
       backend:
         bluestore:
           disks:
-            - dev: /dev/xvdb
-              block_db: /dev/xvdd
+            - dev: /dev/vdb
+              block_db: /dev/vdd
 #              class: hdd
 #              weight: 1.5
-            - dev: /dev/xvdc
-              block_db: /dev/xvdd
+            - dev: /dev/vdc
+              block_db: /dev/vdd
 #              class: hdd
 #              weight: 1.5