Dreamhost use multiple servers to host the sites of its customers. If you have been using their service, you would know the name of your web server. If you have been praying for the servers to come back up(as I have been doing) during the recent outage, you will know the name of your Web Server, MySQL server and the Email Server.
If you are using Dreamhost and you still don't know the names of the your servers, there is still hope. Some ways to find the names of your servers...
Your server's details can be viewed in the 'Account Status' tab in the newly redesigned control panel. Just log in and click the 'Account Status' tab in the upper right corner.
If you just want to know the server name of your web server, just ping the domain. The results for OpenJS.com (emphasis mine, obviously)
$ ping openjs.com PING openjs.com (220.127.116.11) 56(84) bytes of data. 64 bytes from basic-dap.mento.dreamhost.com (18.104.22.168): icmp_seq=1 ttl=54 time=303 ms
hostnameAnother method to find this name is to log into the ssh account and run this command...
$ hostname mento
The different servers in Dreamhost - and their configurations...