Storage service apparatus with double controllers and high speed caching mirroring method

Abstract

The invention provides a storage service device with dual controllers and a mirroring method of a cache thereof. The storage service device comprises an equivalent environment module, a storage device, a first controller and a second controller. The first controller is equipped with a virtual disk and a first cache. The second controller is equipped with a second cache. The method comprises the following steps: selecting the first controller or the second controller as a controller serving an external network by an equivalent environment way; writing the data which are received by the external network in the second cache if the controller selected by the equivalent environment way is the second controller; and establishing communication connection with the first controller, and writing the data which are received by the external network in the first cache and the virtual disk by the second controller.

Description

Storage service device with dual controllers and its cache mirroring method technical field The present invention relates to a storage service device with dual controllers and a mirroring method for cache thereof, in particular to a storage service device with dual controllers and a mirroring method for data cached in the storage service device with dual controllers. shot method. Background technique In order to increase the access performance of storage devices, a storage service device with dual controllers has been proposed. Compared with single controllers, dual controllers can provide multiple clients with the same service at the same time. In the past, in order to ensure that multiple clients can have the same operating environment for the storage service device with dual controllers, a peer-to-peer environment function (sameview) is adopted. The function of the peer-to-peer environment is mainly that when the client is connected to the storage device, the client ...

AI Technical Summary

Problems solved by technology

However, during operation, because the caches of the first controller and the second controller need to transfer data to each other, each transfer of data will increase the access load of the storage service device

Images