After installing Enterprise Service Manager (ESM) there are no statistics shown for CPU, Disk, Log Files etc.
By default there is no monitoring enabled. You must manually enable monitoring for the gateway and statistic you would like.
How to enable monitoring:
When you log into ESM you will notice that by default the matrix is blank with dark grey and light grey boxes.
The light grey boxes can be modified to turn on monitoring. Hover your mouse over the square and click the box that pops up
Next check the box to Enable Monitoring and click Save
After a few seconds if the value can be monitored or exists you will see the value. Otherwise you may see N\A