You will need to change the step and polling interface in the top of the file the defaults are hbeat (heartbeat) 900 and poll 300:

    'db' => {
      'hbeat' => '900',
      'poll' => '300',
      'size' => {

The new values from the spreadsheet are 180 and 60, so the change is:

    'db' => {
      'hbeat' => '180',
      'poll' => '60',
      'size' => {

The interface entry for the Common-database.nmis model would look like this after the change:

 'interface' => {
   'step_year' => '288',
   'rows_month' => '2268',
   'rows_year' => '1890',
   'step_day' => '1',
   'step_month' => '24',
   'step_week' => '6',
   'rows_day' => '9216',
   'rows_week' => '4608'
 },

This change should be made to the following sections:

• reachability
• interface
• default
• metrics

After the change to 1 min data for 8 days, the RRD files are larger, an important consideration for overall disk usage.