The accounting statistics regarding the usage of the NGI_GRNET sites are provided and monitored by the following tools.
1. CESGA accounting portal
This tool is based on glite-APEL services which gather statistics from every site which serve. Then the data are forwarded at the central EGI database and at the central EGI accounting portal in order to be available at every interested.
2. HLRmon accounting portal
This implementation of the HellasGrid accounting portal is based at the various HLR services which gather statistics from every HellasGrid site. Then the data are forwarded at the HLR service of NGI_GRNET and at the next step the data are forwarded at the HLRmon portal of NGI_GRNET for the suitable graphical representation.