VMWare ESX / ESXi Servers Monitor


This section is common to all the editions of IT360, as per the below constraints;

Supported Versions:

ESX Server 3.5 and 4; ESX Server 3i.

Monitored Parameters:

VMware ESX servers are monitored, based on the parameters or the attributes, listed below. These attributes provide information about the functioning of the monitors of VMware ESX server. You can also configure thresholds to the numerical attributes, monitored by the server, based on these details.

In the Servers tab, click on the drop down icon. The drop down list shows the list of Virtualisation-related systems. Click on the relevant ESX / ESXi Server, from the list.

You would see the following;

Click on the individual ESX / ESXi machine, to view the detailed performance metrics of that particular ESX/ESXi server. These metrics are categorized into the following 7 different tabs, for easy understanding;

  1. Overview Tab

  2. CPU Tab

  3. Memory Tab

  4. Datastore Tab

  5. Network Tab

  6. Disk I/O Tab

  7. Configuration Tab


1. Overview Tab:

This tab provides a high-level overview of the ESX/ESXi server, which includes the CPU and Memory details, Resource utilization details, etc. A graphical representation of the Disk and Network Usage is also displayed. It also displays all the virtual machines, discovered under the ESX/ESXi server. This view provides an overall idea of the availability, health, CPU (%), Memory (%), Disk I/O and Network traffic, of all the virtual machines. Click on the individual virtual machines listed, to view the detailed VM metrics.



Monitor Information


The name of VMware ESX/ESXi server monitor.


Denotes the type, you are monitoring.


Denotes the health (Clear, Warning, Critical) status of the ESX/ESXi server.

Last Polled at

Specifies the time, at which the last poll was performed.

Next Poll at

Specifies the time, at which the next poll is scheduled.

Availability Shows the current status of the server - Available or Not available and also Today's Availability.
CPU & Memory Utilization

CPU Utilization

The combined CPU utilization across the system.(%).

CPU Usage The total CPU usage across the system.(MHz).
Memory Utilization Percentage of memory used across the system (%).
Disk & Network Usage

Disk Usage

Disk usage of ESX/ESXi server, in kbps (kilobytes per second).

Network Usage Network usage of ESX/ESXi server, in kbps (kilobytes per second).
Virtual Machines
VM Name Name of the virtual machine (VM) present in the host.
Availability Denotes the availability of the VM - Available or Not available.
CPU Utilization The CPU utilization of this VM, in percentage.
Memory Utilization The memory utilization of this VM, in percentage.
Disk I/O Utilization The disk input/output utilization of this VM, in kilobytes per second.
Network Utilization The network usage of this VM, in kilobytes per second.
Health The health status (Clear, Warning, Critical) of this VM.


2. CPU Tab:

This tab provides metrics about the CPU Utilization details of the cores.



CPU Utilization

The cpu utilization of the CPU core over a period of time (in percentage).


The overall health of the CPU core.


3) Memory Tab:

This tab provides metrics about memory utilization of the ESX server.



Consumed Memory

The value of total memory, minus free memory, in mega bytes.

Active Memory

Amount of memory that is actively used.

Overhead Memory Sum of overhead memory across all VMs.
Reserved Memory Amount of memory currently utilized to satisfy minimum memory values set for all VMs.
Shared Memory Amount of memory shared between virtual machines.
Granted Memory Amount of physical memory granted.
Swapped Memory Amount of memory that is swapped.
Heap Memory Amount of memory allocated for heap.
VMKernel Memory Amount of memory used by the VMKernel.


4) Datastore Tab:

This tab displays metrics pertaining to the data stores of the server.




Name of the datastore.


Type of datastore (example: VMFS or VMware File System).

Capacity GB The total space available in this datastore, in giga bytes.
Used GB The used space of this datastore, in giga bytes.
Free GB The free space of this datastore, in giga bytes.
Health Overall health of the datastore.


5) Network Tab:

This tab provides metrics about network utilization.




Name of the network interface card (NIC) of the host.

Data Receive Rate

The rate, at which this NIC receives data (Kbps).

Data Transmit Rate The rate, at which this NIC transfers data (Kbps).
Packets received Number of network packets, received by this NIC.
Packets Transmitted Number of network packets, transmitted by this NIC.
Health Overall health of this NIC.


6) Disk I/O Tab:

This tab shows detailed disk I/O(Input/Output) stats of the ESX/ESXi server.




Logical unit number, associated with the physical disk.

Disk Read Rate

Disk read rate of this LUN (Kbps).

Disk Write Rate Disk write rates of this LUN (Kbps).
Disk Reads Number of reads to this LUN.
Disk Writes Number of writes to this LUN.
Health Overall health of this LUN.


7) Configuration Tab:

This tab provides info on the ESX/ESXi server's configuration details.



Host Name

The name of VMware ESX/ESXi server monitor.


The power status of the server. The values include poweredOn, poweredOff and standBy.

Vendor Name

The name of the vendor, offering Virtualization (VMware).


Version of ESX/ESXi server.

Hardware Vendor Name

Hardware vendor identification.

Hardware Model

System model identification.

CPU Model

Information about the overall CPU.

CPU Capacity MHz

The overall CPU capacity, in Mega Hertz.
CPU Cores Number of CPU cores present in the server.
Number of VMs Number of virtual machines discovered in the server.


See Also:

Creating New Monitor - VMware ESX/ESXi Server

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