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At 05:50 PM 12/4/97 -0800, you wrote:
>Hello,
>I have on order a 3570 B11 that I need to connect to both
>our new S20 and our existing 310.
>The 310 is currently connected to our 3490 with a 6501.
>
>The System Handbook says that the 6501 can support
>both tape devices and that it can support up to 2 tape
>units. It also says that a 6501 can drive 2 9337 DASD
>Units, but that you cannot have both DASD and tape
>being controlled by one 6501.
>
>I had planned on both the 3490 and the 3570 connecting
>to the 310 with the one 6501. It needs to be able to control
>them at the same time for DUPTAP processing.
>Today our CE dropped by and expressed some concern
>that the 6501 might not be able to control 2 different
>kinds of tape devices simultaneously. He is going to
>make some calls and check.
>
We are not doing this presently, but I understand the design fairly well.

You are correct, it should work, but the throughput will not be as good as
if they were on different 6501's.  Better yet, 6501's on different busses.

Al



Al Barsa, Jr. - Account for Midrange-L
Barsa Consulting, LLC.  
400 > 390

Phone:  914-251-9400
Fax:    914-251-9406





Private mail should be sent to barsa@ibm.net
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