[G4] Drives?

[Eric Smith]

Richard Klein wrote:
>> -----Original Message-----
>> From: keith_w
>>
>> I don't. If a byte still contains 8 bits, 1.5 Gbits equal 1.064 Gbytes.
> 
> That's not a safe assumption.  Overhead on internet traffic means there's
> often closer to 10 bits per byte (eg. 56kbps is roughly 5600 bytes per
> second).  I don't remember how many bits per byte when measuring storage
> device throughput.

SATA uses 8b10b encoding on the wire, a standard 8 bit -> 10 bit
encoding that reduces the number of 1's or 0's transmitted
consecutively (and allows for the insertion of certain control
characters). This is done mainly for the purpose of reducing EMI
levels. So it's probably reasonable to assume 10 bits/byte.

Eric