During backup, lots of snapshots create and remove requests are sent to your vSphere infrastructure. The Snapshots dashboard helps you to visualize those requests:
This dashboard is embedded in SexiLog. If you want up-to-date version for your own platform, the Gist code for this dashboard is:
https://gist.github.com/sexibytes/c92c95ff9c37c6b86d7d
More information about dashboard import in Kibana is available here