×

Computer system having a virtual drive array controller

  • US 5,809,285 A
  • Filed: 12/21/1995
  • Issued: 09/15/1998
  • Est. Priority Date: 12/21/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A computer system, comprising:

  • a system bus having at least one expansion slot;

    a standard controller having front and back ends, said standard controller being a non-array controller, and said front end of said standard controller being inserted in an expansion slot of said system bus;

    a secondary storage bus coupled to said back end of said standard controller;

    a virtual drive array controller having front and back ends, said front end of said virtual drive array controller coupled to said secondary storage bus;

    a first physical device coupled to said back end of said virtual drive array controller; and

    a second physical device coupled to said back end of said virtual drive array controller,said virtual drive array controller representing said first physical device and said second physical device to said standard controller as a logical drive,said secondary storage bus and said logical drive are configured for a first type of physical device, and said first physical device and said second physical device are configured for a second type of physical device that is different from the first type of physical device, andsaid virtual drive array controller translates I/O messages to said logical drive from said standard controller into I/O messages for either said first physical device or said second physical device, and translates I/O messages from said first physical device and said second physical device into I/O messages from said logical drive.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×