Bits/Bytes

i have about three VPSes right now. They are all unmetered (with shared bandwidth).

I am now looking to go on a SINGLE dedicated server with 10mbps unmetered becuuse I want to reduce hassles to managing three VPSes

My peak time usage is shown by this graph ( for each VPS):
[url]
(so this multiplied by 3 is what the new server must be capable of handling)

Now, my query is that:

1. Exactly what speed bandwidth am I using accrding to that image? Is that 12megabytes per second or is that 12 megaBITS per second. Because if it is 12Megabits, then the actual bandwidth speed that I am using would be around 12/8 = 1.5MBPS. ?

2. I think your first question reply would answer this but I will still confirm: will a 10mbps unmetered server be able to handle this kind of bandwidth usage? remember that the graph is only for a single VPS. There are two more VPSes using the same bandwidth at the same time.