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On Tue, 28 Jun 2005 22:15:51 -0700, Mark Overby wrote:
>This message is from the T13 list server.
>I'm not sure we have consensus on this and I'm not sure that was the
>original intent of that bit.

Actually we are talking about the name of the SET FEATURES
subcommands that has generally been called  Enable/Disable Read
Ahead. Probably for the last 10 years the function actually performed
is to enable/disable Read Cache.

>It would appear (based on the discussions at the plenary and side
>discussions I've had with people) that some drives implement this as a
>read cache enable/disable others implement it differently. 

I would agree there are many different implementations of Read (and
Write Cache) but I think most people expect the SET FEATURE
subcommands in question to enable/disable the Read (or Write) cache
feature/function in the drive no matter what the actual cache
implementation is.

Hale


*** Hale Landis *** www.ata-atapi.com ***



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