diff --git a/cluster/README.md b/cluster/README.md
index 73dfd1c..bee2ef8 100644
--- a/cluster/README.md
+++ b/cluster/README.md
@@ -233,7 +233,7 @@ numa: 0
 onboot: 1
 ostype: l26
 scsi0: fastcore:vm-XXX-disk-0,iothread=1,size=8G,ssd=1
-scsi1: fastcore:vm-XXX-disk-1,iothread=1,size=16G,ssd=1
+scsi1: fastcore:vm-XXX-disk-2,iothread=1,size=32G,ssd=1 /dataDisk # k3s-data-dir /dataDisk/k3s
 scsihw: virtio-scsi-single
 smbios1: xxxx-xxxx-xxxx-xxxx-xxxx
 sockets: 1