Plug it into the computer.
I assume you want a way that would actually be a legitimate way of connecting a hard drive, as opposed to unnecessary silliness. SCSI controllers can be fairly expensive, most over $100.
A SATA enclosure is a way to use a hard drive externally. One can remove a hard drive and store it on the enclosure which can connect to another computer where its files can be viewed.
You need an Xbox 360 transfer cable. Connect it to your console along with the hard drive that has all your memory in. Then get the empty hard drive and connect it with the transfer cable and start the transfer.
The fastest way to transfer files from your computer to an external hard drive would be with a firewire cable. They are much faster than USB cables.
Yes, you can either PHYSICALLY put the had drive into another computer or purchase an IDE to USB adapter that you can connect directly to the hard drive and run into the USB of another computer.
You can buy a firewire cord. That is the fastest and easiest way to connect two computers.
Sail boat
They share a common border.
The easiest way to transfer files from an Xbox hard drove to another without losing data is to buy a hard drive transfer kit or transfer cable. It will connect the two hard drives and transfer the files directly. It is also possible to transfer the files by using a flash drive.
Defragment of your hard drive on a monthly basis is one way of maintaining the hard drive.
play hard
Fastest, easiest way is with two (2) RCA cables