Which 360 drive, and how to flash?

I just got myself a 360 arcade, manufactured in September, and I want to flash it so I can use backups, here’s a photo of my DVD drive.

Which DVD drive is that, and how would I go about flashing it? and Can I stealth it so I won’t get the console banned from Xbox Live?

How do I find out what drive I have? Is it easy to reflash the drive? Can I do it on my own in my house? Is so, what tools might I need?