diff --git a/ccp/modules/datashield-compose.yml b/ccp/modules/datashield-compose.yml
index cb09b5d..99d0883 100644
--- a/ccp/modules/datashield-compose.yml
+++ b/ccp/modules/datashield-compose.yml
@@ -54,6 +54,8 @@ services:
       BEAM_APP_ID: token-manager.${PROXY_ID}
       BEAM_SECRET: ${TOKEN_MANAGER_SECRET}
       BEAM_DATASHIELD_PROXY: request-manager
+    volumes:
+      - "/var/cache/bridgehead/ccp/opal-metadata-db:/srv/data/orientdb" # Opal metadata
     secrets:
       - opal-cert.pem
       - opal-key.pem
@@ -68,7 +70,7 @@ services:
       POSTGRES_USER: "opal"
       POSTGRES_DB: "opal"
     volumes:
-      - "/var/cache/bridgehead/ccp/opal-db:/var/lib/postgresql/data"
+      - "/var/cache/bridgehead/ccp/opal-db:/var/lib/postgresql/data" # Opal project data (imported from exporter)
 
   opal-rserver:
     container_name: bridgehead-opal-rserver