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Conference 7.286::fddi

Title:FDDI - The Next Generation
Moderator:NETCAD::STEFANI
Created:Thu Apr 27 1989
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2259
Total number of notes:8590

1274.0. "XMI-TO-FDDI (DAS?)" by GRANMA::LHELLINGS () Fri Mar 11 1994 12:29

    Customer interested in DAS XMI-TO-FDDI adapter.  Is there such a
    component?  (originally quoted DEMFA-AA which is SAS)
    
    Thanks
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1274.1STRWRS::KOCH_PIt never hurts to ask...Wed Apr 20 1994 14:3013
    I'm not a product person, but let me give you a perspective. Digital's
    long range plan is to implement PCI/EISA on all systems. XMI is
    proprietary. I don't expect us to spend engineering dollars to build
    another interface for XMI to get DAS for it. I expect you'll have to
    wait to get PCI on the new high-end system and a PCI FDDI adapter which
    should be SAS, DAS or UTP. 
    
    This is where you'll get it. 
    
    Remember, DAS is for dual-homing and to weather concentrator failure.
    If the customer wants to weather controller failure, DAS won't help.
    You should sell him 2 controllers. So given this, why does the customer
    want DAS?
1274.2QUIVER::STEFANIHave the # for the Mars Observer?Wed Apr 20 1994 19:5324
    >>I'm not a product person, but let me give you a perspective. Digital's
    >>long range plan is to implement PCI/EISA on all systems. XMI is
    >>proprietary. I don't expect us to spend engineering dollars to build
    >>another interface for XMI to get DAS for it. I expect you'll have to
    >>wait to get PCI on the new high-end system and a PCI FDDI adapter which
    >>should be SAS, DAS or UTP. 
    
    PCI is the strategic bus for the company, but I don't know whether it
    is PCI bundle with EISA, ISA, or some other bus.  For info on the PCI
    FDDI adapter and futures, contact the PM - George (DELNI::G_NIELSEN)
    Nielsen.

    >>Remember, DAS is for dual-homing and to weather concentrator failure.
    >>If the customer wants to weather controller failure, DAS won't help.
    >>You should sell him 2 controllers. So given this, why does the customer
    >>want DAS?
    
    DAS allows for dual homing to cover for a failure in a concentrator, or
    one of the fiber optic lines, or if the B port happens to go dead on
    the adapter.  Also, you can set up a DAS network configuration without
    the use of any concentrators.
    
       - Larry