Berlene, seems like you are the 'MASTER' of this forum, so maybe it's better for me to ask you directly:) And I have more than one questions.
We are currently running NNM 6.01 on a HP 9000 K370 server with 2 200M HZ CPUs and half giga RAM. There are about 1,650 nodes in the map. They belong to multiple customers.
Most of the time, our NNM runs ok, but sometimes it drops some status polls, for example, some nodes go down in the map, and as soon as I manually ping them, they come right back up.
When I check the network polling performance, the 'seconds until next status poll' is almost always between 1s - 4s. It does drop to negative value sometime, but very rarely. We are not polling any MIB variable for most of the nodes. Status poll (polling interval is 5m) is pretty much all we do. When I use 'top' to keep tracking the system load, the CPU utilization is usually less than 10%, and no more than 50% when netmon runs. And there is also a lot of free memory available.
As the manual says, 2,000-2,500 nodes is usually the maximum that a stand alone NNM management station can afford. I am wondering why our NNM misses status poll once in a while with less than 1,700 nodes. Is there any kernal parameter or anything at all that I can adjust to make it more efficient?
Also, we are planning to set up collection stations and put them on our customers' side. For a network with 300-500 nodes, 5m status polling interval, what kind of hardware should I use for the collection station? What if we are going to poll 4 to 5 MIB variables for all the nodes with a 10m polling interval?
Do we need a separate license for each collection station? Currently, we have two enterprise licenses.
And the last question, as someone asked, is it possible to copy or export the OpenView object and topology database from one management station to another?
I would be hard put to give you a specific reason why NNM is dropping the ball on status polls, especially without knowing very much about the nodes you are monitoring and your infrastructure. And as for hardware recommendations, alas, again I fail. Your best source of information would be to use the planning sheets in Performance and Configuration manual and then talking with an HP sales rep.
You will need separate licenses for each station (they are ovkey, tied to the IP address). And it is possible to copy/export the database from one management station to another, as long as they are the same OS.