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US 6,857,069 B1Granted
Modified operating system boot sequence for iSCSI device support
AssigneeCisco Technology, Inc.
InventorsCharles Steven Rissmeyer, Edward Alan Soltis
Life of this patent
Estimating the term…
Abstract
SCSI commands are transported over the TCP/IP connection to provide access to a bootable operating system stored on a second networked computerized system, and the networked computerized system is booted from the bootable operating system stored on the second networked computerized system via the SCSI commands transported over the TCP/IP connection. A network driver is loaded in the booting operating system before the booting operating system's disk driver is loaded.
Claims19
A method of booting a networked computerized system comprising:
- transporting SCSI commands over a TCP/IP connection to provide access to a bootable operating system stored on a second networked computerized system;
- and
- booting the networked computerized system from the bootable operating system stored on the second networked computerized system via the SCSI commands transported over the TCP/IP connection, the booting comprising loading an operating system network driver before loading an operating system disk driver.
A networked computerized system comprising:
- a network interface card;
- an iSCSI driver operable to transport SCSI commands over a TCP/IP connection to provide access to a bootable operating system stored on a second networked computerized system;
- and
- a software module operable to boot the networked computerized system from the bootable operating system stored on the second networked computerized system via the SCSI commands transported over the TCP/IP connection, wherein booting the bootable operating system comprises loading a network driver before loading a disk driver.
1 more element
A method of booting a networked computerized system comprising:
- loading a Pre-boot Execution Environment (PXE) boot extension comprising:
- a software module that intercepts INT13 calls and converts them to SCSI read and write commands;
- a micro-iSCSI driver operable to send SCSI read and write commands over a TCP/IP connection;
- and
- a micro-TCP stack providing a TCP implementation for the micro-iSCSI driver;
- transporting SCSI commands over the TCP/IP connection to provide access to a bootable operating system stored on a second networked computerized system via the micro-iSCSI driver and micro-TCP stack;
- booting the networked computerized system from the bootable operating system stored on the second networked computerized system via the SCSI commands transported over the TCP/IP connection;
- loading a network driver before loading an iSCSI disk driver within the booting operating system;
- and
- transferring network interface and SCSI control of the networked computerized system from the PXE boot extension to the operating system.
7 more elements
A networked computerized system, comprising:
- a Pre-boot Execution Environment (PXE) boot extension comprising:
- a software module that intercepts INT13 calls and converts them to SCSI read and write commands;
- a micro-iSCSI driver operable to send SCSI read and write commands over a TCP/IP connection;
- and
- a micro-TCP stack providing a TCP implementation for the micro-iSCSI driver;
- the PXE boot extension operable to transport SCSI commands over the TCP/IP connection to provide access to a bootable operating system stored on a second networked computerized system via the micro-iSCSI driver and micro-TCP stack;
- a software module operable to boot the networked computerized system from the bootable operating system stored on the second networked computerized system via the SCSI commands transported over the TCP/IP connection, booting the networked computerized system comprising:
- loading a network driver before loading an iSCSI disk driver within the booting operating system;
- and
- transferring network interface and SCSI control of the networked computerized system from the PXE boot extension to the operating system.
7 more elements
A networked computerized system comprising:
- a networking means operable to provide network capability to the computerized system;
- an iSCSI means operable to transport SCSI commands via the networking means to provide access to a bootable operating system stored on a second networked computerized system;
- and
- a boot means operable to boot the networked computerized system from the bootable operating system stored on the second networked computerized system via the SCSI commands transported over networking means, wherein booting the bootable operating system comprises loading a network driver before loading a disk driver.
1 more element
Dependencies are inferred from the claim text.