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Disk array system

A disk array and disk technology, applied in the field of large-capacity storage, can solve the problems of high total cost of disk array, low access performance of disk array, expensive FC interface disk, etc., and achieve the effect of improving access bandwidth

Active Publication Date: 2007-11-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Because all the disks in the disk array share the bandwidth of the FC-AL loop, the access performance of the host to the disk array is low
[0016] FC interface disks are expensive, resulting in a high total cost of disk arrays

Method used

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Embodiment Construction

[0044] The core idea of ​​the invention is to use the SATA interface disk to build the system structure of the low-cost RAID disk array system. Existing SATA disk arrays are generally used in low-cost server applications, and a small number of SATA disks are connected through a multi-channel SATA control card to form a SATA disk array. The SATA control card is connected to the server host through the PCI bus. The multi-channel SATA control card has 4 SATA channels and can be connected to 4 disks. There is a processor on the control card to realize the RAID function. Due to the limitation of the number of channels of the SATA control card, the number of disks is limited, and it can only be used in servers with a small number of disks. At the same time, because the PCI bus interface is used between the control card and the server host, the disk array connected to the control card cannot be shared by multiple servers; in addition, because the control card has no redundancy protec...

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PUM

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Abstract

The invention provides a disk array system, which comprises host interface adapter, disk interface adapter, high-speed cache memory, SATA disk array, FC / SATA protocol conversion module. The host interface adapter connects to disk interface adapter and is used to process host calling request; disk interface adapter connects to SATA disk array by FC / SATA protocol conversion module and is used to IO operation for disk; PC / SATA protocol conversion module is used to realize conversion from FC interface to SATA interface; high-speed cache memory connects to disk interface adapter and access data to disk. This invention uses SATA interface disk to build RAID disk array system with low cost and increases visiting bandwidth for disks in system.

Description

technical field [0001] The invention relates to the field of mass storage, in particular to a disk array system. Background technique [0002] With the continuous expansion of computer application fields, users have higher and higher requirements for storage system capacity, reliability and availability, and faster speed. In response to the challenges faced by the storage system, people thought of using multiple disk drives to form a RAID (Redundant Array of Independent Disk) disk array to obtain high data transfer rate and large storage capacity. Due to the disk array capacity, bandwidth and maintenance In the selection of disks, small computer system interface SCSI (Small Computer System interface) interface disks or Fiber Channel (FC) disks are used to construct disk array systems. Due to the high cost of SCSI disks and FC disks, the disk array system has become a high-end device, which limits the application range of the disk array. [0003] At present, the industry ma...

Claims

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Application Information

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IPC IPC(8): G06F3/06
Inventor 胡鹏郑珉
Owner HUAWEI TECH CO LTD