When viewing the Performance under the Pure Storage tab in the vSphere Web Client, you get an error "Content was blocked because it was not signed by a valid security certificate. For more information, see Certificate Errors in Internet Explorer Help".
This issue can occur in any web browser, not just Internet Explorer.
On the vSphere Web Client, the user is unable to view the Performance graph in the Pure Storage tab.
Open a new browser window or tab to log in to the Pure FlashArray GUI. Once you are able to see the login screen of the Pure FlashArray, then the browser has accepted the SSL certificate from the Pure FlashArray.
Then go back to the vSphere Web Client, the Performance graph should now be displayed under the Pure Storage tab.