The Server Installation Disk does not require you to enter a Password only the Client Software Installation Disk or Client Recovery Disk will ask for that type of information.
The Server Installation software when run will provide you with instructions on how to place the server into its recovery mode and it will them make a connection to the server. After that it will ask you if you want to perform a Factory Reset which will format the drives in the server or a Server Recovery which will preserve any data which is on the server as it will just over write the System Drives OS Partition.
From there the Client software would be installed onto your computer and then you will be taken through the Server Configuration process where you will provide a Server Name and Password. This entire process takes about 1 hour to complete then you will have several hours of updates from HP and Microsoft to install so if the software is v1.x then you will be there for quite sometime and if its v3.x its a shorter process because the OS is more up to date.
Again there are 3 Server Disks:
(1) Server Installation Software - This is for installing the operating system WHSv1 on the server
(2) Client Software - This is for installing the console software onto your computer so you can easily connect and communicate with your server
(3) Client Recovery - This is use to recover the computer from a server backup image be it a Fully Recovery or just a single hard drive
You should also know the Server Disk Sets are specific to each server model because of the hardware differences so for your server an EX470 you need the disks specifically for the EX470 or EX475 as they are basically the same server as the only difference between them was the compliment of drives HP Shipped with the server. This model server is commonly referred to as the EX47x.
Other model numbers of the HP MediaSmart Server are EX48x, EX49x, LX19x, and then there is the DataVault x310 and x510 and each model series has their own unique set of disks and in some cases a different recovery method then your EX470.
Here is a link for the EX470 where you can download the Users Guide which will explain what you need to know:
http://h10025.www1.hp.com/ewfrf/wc/prod ... g=en&cc=usBecause of a licensing agreement with Microsoft the WHS Software can not be downloaded from HP. Unfortunately HP no longer issues Recovery Disk Sets for the Windows Home Server Line and Microsoft would not have the software either because its written by HP for their servers to communicate with their severs. Now on Microsoft you can download the Client Installation and Client Recovery Software but not the Server Installation Software.
So the only way for you to obtain an EX470 Server Installation Disk or Server Recovery Disks as many will call it is to physically purchase a disk from another person on sites like eBay or to find someone who has a disk and ask them to make you a copy. As I mentioned before there are 2 versions, v1.x and v3.x and the more difficult copy to get is the v3.x but its that version which is actually more compatible with Windows 7 and 8 both 32 and 64 bit versions where as v1.x you need a 32bit client XP or Vista to have a smooth recovery process. Keep in mind your server model came out in 2007.
Here is a person selling his EX470 along with both sets of CD's. As of the time of this post there is 9.5 hours left to bid. Sometimes its worth it to have a backup server but that's up to you but because both disk sets are included it might be worth picking up. Keep in mind that you can not easily purchase replacement parts for your server. You can purchase a PSU but that will run you about $75 alone. Here is the link on eBay to check out:
http://www.ebay.com/itm/HP-MediaSmart-E ... 2c82ced38a