diff --git a/modules/cluster/default.nix b/modules/cluster/default.nix
index 57d95a55..5215677a 100644
--- a/modules/cluster/default.nix
+++ b/modules/cluster/default.nix
@@ -5,8 +5,8 @@ let
 
   # hydra does *not* use this module because it only runs a nomad
   # server but no client and no microvms
-  servers = [ "server6" "server7" "server8" "server9" "server10" "hydra" ];
-  microvmServers = [ "server6" "server7" "server8" "server9" "server10" ];
+  servers = [ "server8" "server9" "server10" "hydra" ];
+  microvmServers = [ "server8" "server9" "server10" ];
   storageServers = [ "server8" "server9" ];
 
   serverNet = server:
@@ -95,7 +95,7 @@ in {
     storage.ceph = rec {
       package = pkgs.ceph_17_2;
       fsid = "a06b1061-ef09-46d6-a15f-2f8ce4d7d1bf";
-      mons = [ "server7" "server8" "server9" "server10" ];
+      mons = [ "server8" "server9" "server10" ];
       mgrs = mons;
       mdss = mons;
       rbdPools.microvms = {