Hello, these are the links I promised to send in the gridrel-rg session at OGF 21: 1) This paper analyzes the distribution of uptime of nodes in a Grid: Alexandru Iosup, Mathieu Jan, Ozan Sonmez, Dick H. J. Epema, On the Dynamic Resource Availability in Grids, Grid 2007 http://www.pds.ewi.tudelft.nl/~epema/Papers/2007/GRID2007.pdf http://hal.inria.fr/docs/00/14/35/76/PDF/RR-6172.pdf 2) This is the link to our project, AssessGrid: http://www.assessgrid.eu We are looking into incorporating risk assessment into the Grid fabric (negotiating SLAs while knowing that resources can crash, scheduling aspects like provisioning of spare resources, and so on). I have put an item onto my todo-list to incorporate our work into the document. Best regards, Dominic