Dynamic fault detection system for dual controller disk array

Abstract

Disclosed is a dynamic fault detection system for a double-controller disk array, belonging to computer storage technical field and solving the problems that a current fault detection system requires large amount of sample information or demands the sample to meet a specific probability distribution and is large in load of the storage system and complicated in calculation process and is unstable. The dynamic fault detection system consists of a primary controller and a secondary controller which are parallel; palpitation fault detection is carried out between the primary controller and the secondary controller through a second kilomega Ethernet interface and data synchronization is carried out between the primary controller and the secondary controller through an optical-fibre channel; and a palpitation module, an information monitoring module, a fault switching module and a service monitoring module are respectively loaded on the primary controller and the secondary controller. The dynamic fault detection system adopts double palpitation detection mechanisms to avoid single-point fault caused by failure of single palpitation detection. A dynamic palpitation setting mechanism is adopted, thus reducing the spending of the system; the fault switching process and the fault recovery process are totally transparent to the user; all the functional modules act on the application layer, so the system is easy to realize and use and has good flexibility and expansibility.

Description

technical field

[0001] The invention belongs to the technical field of computer storage, and in particular relates to a dynamic fault detection system of a dual-controller disk array. Background technique

[0002] More and more evidence shows that network storage will become the leader of the third wave of IT after personal computer and Internet. Personal computers led the first wave of IT, and the Internet led the second wave of IT by interconnecting isolated hosts through the network. The first wave and the second wave centered on data computing, while network storage will lead the third IT wave centered on data storage. In order to ensure the high availability of the storage system and cope with increasingly frequent failures, it is necessary to perform efficient and accurate detection between multiple nodes or multiple disk array controllers of the storage system. The frequent occurrence of faults has become one of the main problems plaguing scientists, engineers and s...

Images