×

Virtualized storage devices for network disk mirroring applications

  • US 6,389,459 B1
  • Filed: 12/09/1998
  • Issued: 05/14/2002
  • Est. Priority Date: 12/09/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A computer system, comprising:

  • a first server computer including a first storage volume;

    a second server computer including a second storage volume;

    a communication network connecting said first and second server computers; and

    a network operating system implemented within said first and second server computers which supports layered drivers;

    said first server computer including;

    a file system mirror driver for capturing write requests directed to said first storage volume and transmitting the write requests to said second server computer; and

    a state filter driver for examining device commands directed to said first storage volume, determining a device state for the first storage volume, and transmitting said device state to said second server computer; and

    said second server computer including;

    a storage device;

    a file system mirror driver for receiving the write requests from said first server computer and directing the write requests to said second storage volume; and

    a state mirror driver for receiving said device state from said first server computer and storing said device state in said storage device.

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