ARC ISIS service

 NorduGrid is a collaboration aiming at development, maintenance and
 support of the free Grid middleware, known as the Advanced Resource
 Connector (ARC).
 .
 ISIS is a P2P information system for ARC, implemented within ARC
 container (HED). ISIS comes with a Web Service interface. The system
 is necessary to enable a Grid infrastructure as such. Compared to
 traditional LDAP-based information systems, ISIS grants Grid
 participants an increase in flexibility, robustness and offers
 easier configuration and self-healing capability.