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Method and system for optimizing data transfer in networks

A technology for data and host systems, applied in electrical digital data processing, instruments, etc., to solve problems such as high-speed bandwidth degradation

Inactive Publication Date: 2007-09-26
QLOGIC CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This can result in high-speed bandwidth degradation

Method used

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  • Method and system for optimizing data transfer in networks
  • Method and system for optimizing data transfer in networks
  • Method and system for optimizing data transfer in networks

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Embodiment Construction

[0026] The following definitions are provided in terms of their general, though not exclusive, use in a Fiber Channel environment implementing various adaptive aspects of the present invention.

[0027] "Fibre Channel ANSI Standard": The standard, incorporated herein by reference in its entirety, describes the physical interface for high-performance serial links supporting other advanced protocols associated with IPI, SCSI, IP, ATM, etc. , transport and signaling protocols.

[0028] "Fabric": A system that interconnects the various ports to which it is attached and is capable of routing Fiber Channel frames by using the destination identifier provided in the FC-2 frame header.

[0029] "RAID": Redundant Array of Inexpensive Disks, comprising storage devices connected using an interleaved storage technique that provides access to multiple disks.

[0030] "Port": generally refers to N.Sub--port or F.Sub--port.

[0031] To facilitate understanding of the preferred embodiment, t...

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Abstract

A method and system for transferring data from a host system to plural devices is provided. Each device may be coupled to a link having a different serial rate for accepting data from the host system. The system includes plural programmable DMA channels, which are programmed to concurrently transmit data at a rate at which the receiving devices will accept data. The method includes programming a DMA channel that can transmit data at a rate similar to the rate at which the receiving device will accept data.

Description

technical field [0001] The present invention relates to networked systems, and more particularly to programming a direct memory access ("DMA") channel to transmit data at a rate similar to that acceptable to a receiving device. Background technique [0002] Where multiple memory storage devices are available to various host computing systems, a storage area network ("SAN") is often used. Data in a SAN is typically moved from multiple host systems (including computer systems) to storage systems through various controllers / adapters. [0003] The host system typically communicates with the storage system via a host bus adapter ("HBA", which may also be referred to as a "controller" and / or "adapter") using a "PCI" bus interface. PCI stands for Peripheral Component Interconnect, which is developed by Intel Corporation  A proposed local bus standard. The PCI Standard is incorporated herein by reference in its entirety. Most modern computing systems contain a PCI bus in additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/28
CPCG06F13/28
Inventor 杰拉尔德·K·奥尔斯顿奥斯卡·J·格里哈尔瓦
Owner QLOGIC CORPORATION