1.NPM can help keep a watch on the network and devices like switches, routers, access point. It can monitor any SNMP enabled devices in real time.
2.NPM can easily scale up when your network grows beyond the usual limits and it can monitor the network and connected devices with same efficiency and speed. Scale up is primarily handled by Orion Hot Standby Engine which keeps a watch on the health and functioning of the primary NPM system.
3.The Orion website has the ability to run from machines other than the Orion server and allows additional web server to be added. This allows more users to access the Orion web portal without impacting the overall performance.
4. It supports multiple vendors and thus can monitor majority of the network devices
5. Microsoft Active Directory support
Room for Improvement:
1.The user interface is not intuitive enough and needs improvements in certain parts.
2.The web interface does not have a good support for some browsers like Google Chrome. It officially supports IE and Firefox.
3. Windows Vista systems are not officially supported from SolarWinds.
Solarwinds NPM has lots of features not found in some other network performance monitoring tools e.g. seamless integration with Microsoft Active Directory. It can easily scale up when there is a need to support and monitor higher number of devices without impacting the overall performance. There are certain pain points that need to be addressed like improving the overall user interface and support for more number of web browsers.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Mar 31 2013