We are currently busy to set up a "Global Monitoring" project in which
we are now in the phase to decide which way to go:
1. use Open source tools (Hobbit, bigbrother (not really open source),
Nagios
2. Outsourcing the whole monitoring/alarming to an external provider
3. Use Enterprise class systems (Tivoli, MicroMuse, CA, HP Openview...)
After our last discussion it's getting clear that we will recommend
using an Open source tool, preferably Hobbit, as the 1. option to the
management.
There are a couple of reasons for that, I guess you should best know it
:)