Manage Engine OpManager is better suited to serve server and network admins at organization to monitor their servers and network devices. It helps us with compliance with the reports available like utilization reports and capacity planning reports. It helps you to keep track of what all process are consuming the resources. It helps you in monitoring what is happening in your switches, routers and firewall
Nagios Log Server facilitates the ability to search all entries of logs in a quick and easy way. Beyond that, it has allowed us to configure alerts for notification when there are potential threats (may they be security threats or only application-side problems), and to filter the data for audits and compliance.
It measures the CPU utilization of hosts, the network bandwidth utilization of links, and other aspects of the operation
It often sends messages—sometimes called watchdog messages—over the network to each host to verify if it is responsive to requests.
Set Up Notifications And Reports.
OpManager offers a set of advantages that allow it to adapt to the needs of the company, guaranteeing effective monitoring of the application networks used in our organization.
Alerts has to be configured correctly otherwise unnecessary bombarding of alerts can cause inconvenience.
The server on which ManageEngine OpManager is to be deployed should have higher resources as monitoring a large number of devices may slow down the performance of the system.
Configuring the advanced features may require a learning curve.
The rating I provided is based on the product quality, experience (I have been using OpManager for almost the last 4 years), and relevance of the information/response I generated through Manage Engine OpManager. I have also received good support from OpManager.
At first, we were not able to add our Avaya switches to the configuration backup module, our partner tried to help, but they did not find the solution, we had one remote session with tech support of ME and they solve the problem.
Nagios support is decent. Nothing bad to say about them, but nothing extraordinary too. We mostly asked them questions instead of actively asking them to change or fix things for us. The response time is OK, commonly you can get a response in the same day. You can also call, but they are available only during US office hours.
During our competitive analysis, we found ManageEngine OpManager was not expensive compared to other vendors. At the same time, there was no compromise on the features such as customized reporting or configuring alerts per our clientele's unique requirements. These are our client words "Other vendors ask us to pay more $$$ for enabling additional email alerts".
Windows Event Log doesn't have 10% of the capabilities of Nagios Log Server. No real-time alerts, no scheduling, no external plugins or APIs. Nothing. The only advantage is that it is a native Windows application.
I don't know if you can calculate ROI with a monitoring solution, there are more factors to calculate.
We found a really big problem with a network switch (faulty transceiver) in a trunk configuration with OPManager. this caused us serial troubles with the overall network stability.
We are loosing around € 3.000 to 5.000 per hour if our network is not working so this was a great help to fix this issue
Our label printers are really important to monitoring in our warehouse system, this makes OPManager a great solution for that