Our Plesk platformm is on Windows server. If the Plesk is on Unix server, the Apache will work. So, we can add 301 redirect code in .htaccess file.
In this case where Apache is not supported. We can redirect the pages by adding code in web.config file.
<?xml version="1.0" encoding="UTF-8"?>
<httpRedirect enabled="true" destination="newfileURL" httpResponseStatus="Permanent" />
We can add as many pages we want to redirect in same code.