Method for managing magnetic disk array buffer storage

A disk array and cache technology, applied in the field of storage management, can solve the problems of not considering the busyness of disk channels, increasing the pressure of disk channels and disks, and increasing the average service time of host write operations, so as to reduce the average service time and improve performance Effect
CN1862475AActive Publication Date: 2006-11-15HUAWEI TECH CO LTD +1
0 Cites 29 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2006-11-15

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention discloses a management method of magnetic disk array buffer memory for reading / writing request. The management process for reading request includes the following steps: when the reading request of main machine is reached, judging that the reading request data is stored in the magnetic disk array buffer memory or not, if said reading request data is stored in said magnetic disk array buffer memory, obtaining reading request data from said magnetic disk array buffer memory and returning said reading request data to main machine, otherwise, obtaining reading request data from magnetic disk, returning it to main machine and executing step b 1; b 1 includes the following contents; judging that in the magnetic disk array buffer memory a free field is existed or not, if said free field is existed, storing reading request data in said free field, otherwise, executing step C 1; step C 1 includes the following contents; selecting reading data block in magnetic disk array buffer memory, storing the reading request data in position place of selected reading data block. For writing request of main machine said invention adopts similar method to make management.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to storage management technology, in particular to a management method for disk array cache for read requests and write requests. Background technique

[0002] With the development of network technology and the popularization and application of computers, the amount of data storage is increasing day by day, and people have higher and higher requirements for storage systems. This requirement is especially reflected in the storage application of key transactions. Redundant Array of Independent Disks (RAID) adopts striping and redundancy methods to improve the capacity, speed and reliability of storage systems, and has become the preferred structure for high-performance data storage.

[0003] A RAID system usually includes a controller, a disk array cache, and a lower-level storage composed of multiple disks. The disk array cache is used to temporarily store the data blocks accessed by the host, so that most of the host's data acces...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More