diff --git a/buildbot/start_script.sh b/buildbot/start_script.sh
index c53393fca..3009deb11 100755
--- a/buildbot/start_script.sh
+++ b/buildbot/start_script.sh
@@ -34,14 +34,14 @@ mountpoint /tmp     || mount -o nosuid -t tmpfs tmpfs /tmp || $ON_ERROR
 ${SCRIPT_DIR}/install_deps.sh
 
 mkdir -p $BOT_DIR
-#if [[ "$(arch)" == "x86_64" ]]; then
-#  # Format and mount scratch drive.
-#  [[ -e /dev/md0 ]] || {
-#    yes | mdadm --create /dev/md0 --level=0 -q -f --raid-devices=$(ls /dev/nvme*n* | wc -l) /dev/nvme*n*
-#    mkfs.xfs /dev/md0
-#  }
-#  mountpoint $BOT_DIR || mount -o nosuid /dev/md0 $BOT_DIR || $ON_ERROR
-#fi
+if [[ "$(arch)" == "x86_64" ]]; then
+  # Format and mount scratch drive.
+  [[ -e /dev/md0 ]] || {
+    yes | mdadm --create /dev/md0 --level=0 -q -f --raid-devices=$(ls /dev/nvme*n* | wc -l) /dev/nvme*n*
+    mkfs.xfs /dev/md0
+  }
+  mountpoint $BOT_DIR || mount -o nosuid /dev/md0 $BOT_DIR || $ON_ERROR
+fi
 
 # Move home to the scratch drive.
 usermod -d $BOT_DIR buildbot