diff --git a/devstack/lib/ironic b/devstack/lib/ironic
index 1ef2f0475f..2693004670 100644
--- a/devstack/lib/ironic
+++ b/devstack/lib/ironic
@@ -143,7 +143,7 @@ IRONIC_TFTPSERVER_IP=${IRONIC_TFTPSERVER_IP:-$HOST_IP}
 IRONIC_TFTP_BLOCKSIZE=${IRONIC_TFTP_BLOCKSIZE:-$((PUBLIC_BRIDGE_MTU-50))}
 IRONIC_VM_COUNT=${IRONIC_VM_COUNT:-1}
 IRONIC_VM_SPECS_CPU=${IRONIC_VM_SPECS_CPU:-1}
-IRONIC_VM_SPECS_RAM=${IRONIC_VM_SPECS_RAM:-1280}
+IRONIC_VM_SPECS_RAM=${IRONIC_VM_SPECS_RAM:-3072}
 IRONIC_VM_SPECS_CPU_ARCH=${IRONIC_VM_SPECS_CPU_ARCH:-'x86_64'}
 IRONIC_VM_SPECS_DISK=${IRONIC_VM_SPECS_DISK:-10}
 IRONIC_VM_SPECS_DISK_FORMAT=${IRONIC_VM_SPECS_DISK_FORMAT:-qcow2}