Opening RL02 disk pack

Paul Koning paulkoning at
Fri Dec 7 10:18:56 CST 2018

> On Dec 7, 2018, at 11:11 AM, Paul Birkel via cctalk <cctalk at> wrote:
> Quoted from "DISK DRIVE CONTROL: THE EARLY YEARS" (Abramovitch & Franklin)
> ve_control 
> "DEC came out with the 125 TPI RL01 disk drive in 1978,which was the first
> mass
> produced full sectored (embedded) servo drive on the market."
> Sounds to me like it was different, but in a good way?
> paul

A good way, definitely.  Embedded servo enables the vastly higher densities we have today, and also enables the use of all surfaces.  A dedicated servo surface is not a major hit on an RP06 that has 10 platters, but on a one or two platter pack it's way too much overhead.


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