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Table Of Contents  CertiGuide to A+ (Core Hardware)
 9  Chapter 0100:  Hard Drives
      9  VI  Older Hard Drive Technologies and Interfaces

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FM and MFM
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 ESDI
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RLL

In the ongoing quest for more storage MFM was getting competition from Run Length Limited (RLL). This new encoding scheme reduces the amount of the data checking information required, allowing for more data to be stored. By far the most popular version of RLL was RLL 2,7. It was called this because the sequence of zeros in the data-checking codes always ranged from 2 to7, yielding a 50% increase in storage over MFM.


Previous Topic/Section
FM and MFM
Previous Page
Pages in Current Topic/Section
1
Next Page
 ESDI
Next Topic/Section

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