For monitoring purposes, what should the threshold be set for on a Unity server (MCS-7835), a percentage of physical memory or total (includes virual) memory? The monitoring agent vendors just say 90% of physical memory. CallManager and Unity seem to use memory diffferently than "normal" servers. I have a Unity server with 2 gigs of physical memory and 4 gigs of total memory. 2.3 gig is being used now. Is this a problem? Where can I find information on how Unity uses memory and what becomes a problem?