Hi, I'm currently working on a recruitment processing system that aims to handle both applicant submissions and the management of the process by HR staff. The intention is to use a ZOPE-only solution with Zserver, ZODB (no external DB), Zclasses, and we have a successful prototype running (yay!). An important issue for us is how many applicants a single ZOPE server instance can handle, and what the total number of applications that a single instance can store, without suffering severe performance impairment or instability. This is important for doing forward planning (i.e. how long before the need to buy another server, split up the recruitment campaigns onto separate ZOPE instances etc.) I know its not a simple issue - there are considerations of how large an individual item is, how much processing an application requires once its submitted to the system (quite a bit) and how its all coded (mostly Python scripts called as methods on ZClass isntances) etc. But that said, are there any metrics that can be used to get some ball-park figures? Thanks! ============= Scott Wilson Technical Journalist Centre For Educational Technology Interoperability Standards (CETIS) +44 (0)1248 383645 http://www.cetis.ac.uk