thank you all for your valuable answers. Another business partner told the
customer that a second escon channel is not possible on 3590. This I could
hardly believe because there was a feature code FC3312 called "second escon
adapter for 3590". Now I'm sure that the other business partner is wrong.

Franz Josef

> --- Ursprüngliche Nachricht ---
> Von: "Pommier, Rex R." <[EMAIL PROTECTED]>
> An: [email protected]
> Betreff: Re: [IBM-MAIN] question to backup on 3590
> Datum: Mon, 15 May 2006 17:11:00 -0500
> 
> Eric,
> 
> Bruce is saying that the effective transfer from the controller to the
> tape drive is 27 MB/sec.  Thus, when the ESCON channel can't provide
> nearly that thruput, the tape drive ends up waiting for the channel.  
> 
> Rex

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