{ ... }: { fileSystems = { "/storage/cold_1" = { device = "/dev/storage/cold_1"; fsType = "ext4"; options = [ "nofail" "noatime" ]; }; "/storage/cold_2" = { device = "/dev/storage/cold_2"; fsType = "ext4"; options = [ "nofail" "noatime" ]; }; "/storage/hot" = { device = "/dev/storage/hot"; fsType = "ext4"; options = [ "nofail" "noatime" ]; }; }; swapDevices = [{ device = "/storage/hot/.swapfile"; size = 128 * 1024; options = [ "nofail" ]; }]; }