With 4 ports for 3.5 hard drives has more than enough space.
I bought nor the Remote Access Card and another HP KINGSTON 4GB 1333MHZ DDR3 ECC. With 8 GB of server is really fast on the road. I use it for my virtual machines. With 2 virtual servers and 5 clients, which run simultaneously, he is not yet at its borders and runs perfectly.
He also would be suitable as a good alternative to a NAS server. The server runs very quiet and stable. The components are of course, but all closely beisamen with just a few clicks changes to PCI cards and other things. This should also hammer out any layman. Before you can pull out the motherboard you should remove all cables. Detailed instructions are available as a PDF download in German.
So who is looking for a small but very powerful server will be well served with this part. In addition to my main server, the little thing does really well.
The server should also be well suited with his performance as a server for small businesses.