diff --git a/inventory/group_vars/all b/inventory/group_vars/all
index a82c8d8308..15e447a778 100644
--- a/inventory/group_vars/all
+++ b/inventory/group_vars/all
@@ -52,7 +52,7 @@ install_noc: none
 # defaults for virt installs
 ks_url: http://infrastructure.fedoraproject.org/repo/rhel/ks/kvm-rhel-7
 ks_repo: http://infrastructure.fedoraproject.org/repo/rhel/RHEL7-x86_64/
-mem_size: 2048
+mem_size: 4096
 num_cpus: 2
 lvm_size: 20000