Installation guide

Table 21-4. Virtual Machine Condition and State Alarm Triggers (Continued)
Trigger Type Trigger Name Description
Condition Fault Tolerance
Secondary VM Latency
Status Changed
Amount of wallclock time that the virtual CPU of the secondary virtual
machine is behind the virtual CPU of the primary virtual machine.
n
Low – 0-2 seconds
n
Moderate – 2-6 seconds
n
High – More than 6 seconds
State Heartbeat Current status of the guest operating system heartbeat:
n
Gray – VMware Tools are not installed or not running.
n
Red – No heartbeat. Guest operating system may have stopped
responding.
n
Yellow – Intermittent heartbeat. A Yellow status may be caused by heavy
guest OS usage.
n
Green – Guest operating system is responding normally.
Condition Memory Usage (%) Amount of configured RAM (MB) used by the virtual machine. The
calculation is:
VM Memory Usage (%) = Active Memory [MB] / configured RAM of VM [MB]
x 100
Condition Network Usage (Kbps) Sum of data transmitted and received across all virtual NIC instances on the
virtual machine.
Condition Snapshot Size (GB) Aggregate size (KB) of all snapshots taken for the current virtual machine.
State State Current state of the virtual machine:
n
Powered On – The virtual machine is powered on.
n
Powered Off – The virtual machine is powered off.
n
Suspended – The virtual machine is suspended.
Condition Total Disk Latency (ms) Average amount of time taken to process a SCSI command issued by the Guest
OS to the virtual machine. The calculation is:
Total Disk Latency = kernelLatency + deviceLatency
n
Low – 0-2 seconds
n
Moderate – 2-6 seconds
n
High – More than 6 seconds
Condition Total Size on Disk (GB) Aggregate amount of disk space occupied by all virtual machines on the host.
Host Condition and State Triggers
VMware provides preconfigured alarms that trigger when hosts undergo certain conditions and states.
Table 21-5 lists the default Condition and State triggers you can set on hosts.
Chapter 21 Working with Alarms
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