The listserv's impact on the system is about 8% CPU power for us. But then again, we also have the optional line monitor, and the IAMUP, which gives a montly report on availability. Our LISTSERV hosts some very active lists, especially one in Turkish, dedicated to helping users with their problems/questions on VM, CMS, etc. * LISTSERV requires a minimum of two disks. Our 'A' is 20 3375 cylinders. The 'D' disk is a temporary storage medium, and I believe is set to 5 cylinders. Note that half of those 20 cylinders are taken by our locally developed software. So you can go with a 10 cylinder disk.. * Maintenance? Well, minimal I would say. You can pretty much set the level of maintenance you require. If you set up many file lists, then you are asking for it :) - it can be time consuming to keep them looking pretty. * Lists are easy to create, once you get the hang of it. Overall, the listserv is the most useful service machine (after RSCS, naturally) for us.. Please contact Eric for availability - there may be some problems. -turgut