On VMware, when you request process-intensive operations such as creating 240 Virtual Drives, Drive Initialization, Consistency Check, Drive Erase, and so on, the VMware ESXi Server may time out, resulting in a delay of the operation that is being performed.
To avoid the VMware ESXi Server getting timed out, perform the following steps to change the nginx FCGI Read Timeout.
fastcgi_read_timeout field.fastcgi_read_timeout to anywhere between 900 to 2000 depending on your requirement.