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SCALABLE DATA ACCESS SYSTEM AND METHODS OF ELIMINATING CONTROLLER BOTTLENECKS

  • US 20190310773A1
  • Filed: 06/24/2019
  • Published: 10/10/2019
  • Est. Priority Date: 04/08/2016
  • Status: Active Grant
First Claim
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1. A method of writing write data to at least one storage device comprising:

  • generating a write request in a computer processor;

    passing the write request to a front-end storage controller (nFE_SAN);

    copying the write data to a first and a second cache memory of the nFE_SAN;

    generating a write lock request and transmitting the write lock request from the nFE_SAN over a network interconnect selected from a first and a second storage area interconnect to a back-end storage controller (nBE_SAN);

    returning a write lock grant from the nBE_SAN to the nFE_SAN;

    upon completing copying the write data to the first and second cache memory of the nFE_SAN and receiving the write lock grant from the nBE_SAN, the nFE_SAN providing a write complete signal to the computer processor;

    copying the write data over a network interconnect selected from the first and second storage area interconnect to the nBE_SAN; and

    writing, by the BE_SAN, the write data to the at least one storage device.

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