diff --git a/group_vars/collab.yml b/group_vars/collab.yml
index 0eff70a..a49673c 100644
--- a/group_vars/collab.yml
+++ b/group_vars/collab.yml
@@ -1,6 +1,6 @@
 ---
 datadisks:
-  - {size: 10}
+  - {size: 10, type: nvme}
 
 firewall_in:
   - {proto: tcp, port: 22, from: [172.20.20.0/22]}