So here I am, most of the parts have arrived, except for the most
important part, which is the server itself, but that should arrive
(hopefully) this week.
Up until now, I have received the storage enclosure, which will house the two 400GB disks for the 400GB RAID 1 array:
the raid card that will control the two disks in the external enclosure (just notice how small it is)
and the pci SATA to eSATA bracket which is needed to provide the path
from the RAID card inside the tower to the outside of the tower. The
connection between the external storage enclosure and the tower will be
through eSATA.
And, finally, a picture showing how everything should connect (and verifying that indeed all the connections are possible):
