Other monitoring solutions 

IREO offers a series of network monitoring tools that are designed for helping IT staff in specific situations, such as the analysis and diagnostics of Voice over IP networks, monitoring Storage Area Networks, network troubleshooting and diagnostic toolkits and much more.
  
 

ManageEngine OpStor

OpStor is a multi-vendor storage area networks SAN and network attached storage NAS monitoring tool for storage devices like Storage Arrays, Fabric Switches, Tape Libraries, Host servers and Host Bus Adapters cards from leading vendors like EMC, HP, IBM, Cisco, Brocade, DELL, ADIC, SUN, QLogic, Emulex, JNI and more .

 ManageEngine OpUtils

  OpUtils is a comprehensive set of 30+ tools that helps network engineers monitor, diagnose and troubleshoot their IT resources. Network engineers and IT operations staff managing large networks would find this toolset very useful and handy, especially during troubleshooting .