As far as i am concerned. Baselining is determining what your networks/Servers Bare Minumum Levels are.
Eg. Monitoring – Take CPU in a Server – You can say the Max it should go to is 80% and then you’ll need a better one. So what you can do is use performance monitor, and setup a log of CPU usage in %age. You run this and then see if the CPU goes over 80% and that’s how you do the monitoring. Servers have loads of thing to look for and we use this to see if we need the upgrades.
eg. Baselining – get the network/PC running as you want it too – no probs etc. Monitor the network/PC for a week and you’ll get a list of results based on your monitoring. Say memory % Free. Do the monitoring and you’ll see the average free memory. say you have a server with 512MB and it stays at 128MB free at all times, and you have no probs, thats you baseline, any time you go below that your network suffers and you’ll need to upgrade.
So to sum up,
Monitoring is recording what your network/PC is doing. Baselineing is using a monitor (of any sort) to determine your PC/Networks lowest free rescource levels are (Hence Term Baseline).
Hope this helps,