4.3 VSAN Observer
For more granular information on how vSAN is operating, you can utilize VSAN Observer, a tool that provides deep visibility into vSAN performance metrics and counters. This tool is included with vSphere 6.0. As a part of this release, the Ruby vSphere Console (RVC) provides an interactive command interface that can be used to manage, monitor, and troubleshoot. RVC includes functions for the following:
• vSAN configuration
• vSAN health monitoring
• vSAN disks statistics
• vSAN performance statistics
• VSAN Observer
You can use VSAN Observer to monitor information on vSAN. Observer is a graphical user interface utility that displays vSAN-related statistics from the vSAN client perspective. It can be used to understand vSAN performance characteristics and for analysis.
Note VSAN Observer is primarily a troubleshooting tool. VMware does not recommend running it continuously.
The VSAN Observer user interface displays performance information for the following:
• Statistics of the physical disk layer
• Extensive physical disks group details
• CPU usage statistics
• Consumption of vSAN memory pools
• Physical and in-memory object distribution across vSAN clusters
An example of the interface is shown in the following figure.
Figure 21. VSAN Observer
For more detailed information on troubleshooting using the VSAN Observer tool, see the following VMware documentation:
• VMware Virtual SAN Diagnostics and Troubleshooting Reference Manual
• VMware Ruby vSphere Console Command Reference for Virtual SAN
• Monitoring VMware Virtual SAN with Virtual SAN Observer
