Super large capacity virtual magnetic disk storage system

A technology of virtual disk and storage system, applied in the field of storage system with tape library, disk array and virtual disk storage

Inactive Publication Date: 2006-11-15
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The previous scheduling strategies based on disk cache have one thing in common. They all consider how to optimize the I / O operation in combination with the structural characteristics of the tape library. For tape (library), the existing disadvantages still exist

Method used

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  • Super large capacity virtual magnetic disk storage system
  • Super large capacity virtual magnetic disk storage system
  • Super large capacity virtual magnetic disk storage system

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0025] figure 1 It is a schematic structural view of an embodiment of the present invention, wherein the open system host 2 is any suitable type of workstation or personal computer, and sends a small computer system interface (SCSI) disk command to the virtual disk storage system 6 of the present invention through the SCSI bus 4 , the virtual disk storage system 6 includes a virtual disk server 22 and a tape library 25, both of which are connected through a small computer system interface (SCSI) bus.

[0026]The virtual disk server 22 of the present embodiment is made up of the disk array 31 that a common PC connects common SCSI interface, and PC comprises LSI company's LSI22320 small computer system interface adapter 29, Intel Pentium4 2.4GHz processor 30, network adapter 32. The memory 27 of 512M bytes, and the network adapter is a network ...

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Abstract

The present invention relates to a super-large-capacity virtual magnetic disk storage system, belonging to the field of computer storage technology. Said invention utilizes SCSI bus or network communication link to make communication with open system main machine. It includes virtual magnetic disk server and magnetic tape library, the described virtual magnetic disk server includes miniature computer system interface adapter, processor, magnetic disk array and memory; said memory includes address mapping module, command conversion module, writing module, buffer memory management module, reading prefetching module, virtual storage module and buffer storage module; the magnetic tape library includes medium exchange unit, magnetic tape driver unit and storage unit. Between the virtual magnetic disk server and magnetic tape library they are connected by means of SCSI bus.

Description

technical field [0001] The invention belongs to the technical field of computer storage, in particular to a storage system accessed by a computer system with a tape library, a disk array and a virtual disk storage. Background technique [0002] With the rapid development of computer technology and network communication technology, the degree of informatization is getting higher and higher, and people's demand for data is increasing. This requirement requires not only online storage of large amounts of data, but also data backup and archiving. Data backup and archiving mainly use disks, tapes and CDs, that is, using Disk-to-Tape (Disk-to-Disc) or Disk-to-Disk-to-Tape (Disk-to-Disk-to-Disc) mode. [0003] The advantage of using magnetic tape as a storage medium is that it can be stored for nearly 30 years and is easy to transport; while the life of a magnetic disk is about 10 years, it is not suitable for mobile storage. Of course, the magnetic tape (library) also has disadv...

Claims

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Application Information

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IPC IPC(8): G06F3/06H04L29/06
Inventor 冯丹王芳曾令仿施展田磊刘景宁童薇
Owner HUAZHONG UNIV OF SCI & TECH
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