anchor.diff:      {noreply, State1};
   
   handle_gz({Host, _, SnapTime,
  -             {<<"sderr">>, Instance, _Name, _Class}, {<<"Predictive Failure Analysis">>, V}},
  -            State) ->
  +           {<<"sderr">>, Instance, _Name, _Class}, {<<"Predictive Failure Analysis">>, V}},
  +          State) ->
       ID = list_to_binary(integer_to_list(Instance)),
       Metric = <<"sd[", ID/binary, "].", "predicted_failures">>,
       tachyon_guard:put(Host, SnapTime, Metric, V, 1),
  
positive.code:     {noreply, State1};
  
  handle_gz({Host, _, SnapTime,
               {<<"sderr">>, Instance, _Name, _Class}, {<<"Illegal Request">>, V}},
              State) ->
      ID = list_to_binary(integer_to_list(Instance)),
      Metric = <<"sd[", ID/binary, "].", "illegal_requests">>,
      tachyon_guard:put(Host, SnapTime, Metric, V, 1),
  
negative.code: 
  
  handle_gz({Host, _, SnapTime,
             {<<"ip">>, _Instance, _Name, _Class}, {Key, V}},
            State) ->
      tachyon_guard:put(Host, SnapTime, <<"ip.", Key/binary>>, V, 4),
      State1 = put(<<"cloud.host.ip.", Key/binary>>, V, SnapTime,
                   [{host, Host}], State),
      {noreply, State1};
  
  handle_gz({Host, _, SnapTime,
             {<<"zfs">>, _Instance, <<"arcstat">>, _Class}, {Key, V}},
            State) ->
      Metric = <<"arc.", Key/binary>>,
      tachyon_guard:put(Host, SnapTime, Metric, V, 4),
      State1 = put(<<"cloud.host.arc.", Key/binary>>, V, SnapTime,
                   [{host, Host}], State),
      {noreply, State1};
  
  handle_gz({Host, _, SnapTime,
             {<<"sd">>, Instance, _Name, _Class}, {Key, V}},
            State) ->
      ID = list_to_binary(integer_to_list(Instance)),
      Metric = <<"sd[", ID/binary, "].", Key/binary>>,
      tachyon_guard:put(Host, SnapTime, Metric, V, 4),
  