I/O REQUEST MIRRORING IN A CLUSTERED STORAGE SYSTEM

摘要

Clustered storage systems and methods are presented herein. One clustered storage system includes a logical volume comprising first and second pluralities of storage devices. The first plurality of storage devices is different from the second plurality of storage devices and includes at least the same data as the second plurality of devices. The storage system also includes a first storage node operable to process first I/O requests to the first plurality of storage devices and a second storage node communicatively coupled to the first storage node and operable to process second I/O requests to the second plurality of storage devices. An I/O request of the first I/O requests initiates a redirection condition that the first storage node detects. Then, based on the redirection condition, the first storage node directs the second storage node to process data of the I/O request.

主权项

1. A storage system, comprising:
a logical volume comprising first and second pluralities of storage devices, wherein the first plurality of storage devices is different from the second plurality of storage devices and includes at least the same data as the second plurality of devices, a first storage node operable to process first input/output requests to the first plurality of storage devices; and a second storage node communicatively coupled to the first storage node and operable to process second input/output requests to the second plurality of storage devices, wherein an input/output request of the first input/output requests initiates a redirection condition, and wherein the first storage node is operable to detect the redirection condition, and to direct the second storage node to process data of the input/output request based on the redirection condition.