DCIM  ( Datacenter Infrastructure Management )tool is  for monitoring and capacity planning of the datacenter. 

DCIM is a complete Datacenter management tool, which gives single solution to all Datacenter releated components, such as monitoring, inventory management ( asset mgmt ), support multi room, multi site Datacenters,   Hardware layout view ( Servers, Network and Storage), As a Data Center modeling solution,  DCIM  also captures facilities such as power and cooling alongwith tpyical resource monitoring provided by monitoring solutions.

So in nutshell DCIM is a tool for monitoring , capacity planning and operational support of the datacenter in its entirety.

DCIM tool is available as an opensource tool or as vendor driven. Below are the links for some of DCIM tools for free download or purchasing.

openDCIM – An opensource based free DCIM tool. Although this tool is limited in its functionality and capabilities in terms of DCIM.

NETZoomDC  –  A comprehensive tools for Data Center management, spanned  across multiple dimensions of Data Center.

ManageEngine  –  Another tool for Facilities Management, ITIL Ready, Application and End user performance and IT Operation management.

SERVERCHECK – A sensor based centralized server monitoring tool.

Device42 –  A DCIM tool, which shows Datacenter Layout, generate rack diagrams, IT Patch Panel Mgmt, Device Information, Manage Spare parts, power and thermal mgmt with variety of auto discovery for network, virtual or physical infrastructure.