Patents by Inventor Asim R. Qureshi

Asim R. Qureshi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Remote data shadowing using a multimode interface to dynamically reconfigure control link-level and communication link-level
    Patent number: 5574950
    Abstract: A remote copy system incorporates dynamically modifiable ports on the storage controllers such that those ports can operate either as a control unit link-level facility or as a channel link-level facility. When configured as a channel link-level facility, a primary storage controller can appear as a host processor to a secondary storage controller. Using dynamic switches coupled between primary and secondary sites, fewer ESCON communication links are required since the ESCON communication links can function either as a channel or as storage controller communication link.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: November 12, 1996
    Assignee: International Business Machines Corporation
    Inventors: Roger G. Hathorn, Bret W. Holley, James L. Iskiyan, William F. Micka, Asim R. Qureshi