Device for bridge a mainframe to a memory region network

Abstract

The present invention discloses a bridging device for bridging a terminal main machine to a storage region network. The function of said bridging device is used for virtualizing a magnetic disk region set on the described storage region network into a direct additional storage equipment. The composition of the invented bridging device includes a first main machine bus adapter for connecting with a storage region network; a second main machine bus adapter for connecting with a terminal main machine with direct additional storage equipment interface; a bridging controller, it is respectively connected to the described first main machine bus adapter and described second main machine bus adapter and is used for bridging the described terminal main machine to the described storage region network, so that the described terminal main machine can directly access the magnetic disk region set on the described storage region network; and a storage unit, it is connected to the described bridging controller and is used for storing program and data.

Description

technical field [0001] The present invention relates to a bridge (Bridge) device, in particular to a bridge device for bridging a host (Host) to a storage area network (Storage Area Network, SAN). Background technique [0002] Except for large enterprises that have built storage area networks, most of the current storage is based on Direct Attached Storage (DAS) devices. DAS generally refers to a storage device that is directly connected to a host (for example, a server or a desktop computer), and has interfaces such as SCSI, SATA (Serial ATA), eSATA (External SATA), USB, and SAS (Serial Attached SCSI). [0003] DAS is a storage structure used by general enterprises. When the storage device is directly connected to the application server, DAS has the following disadvantages due to the limitations of the inherent structure: [0004] 1. The storage device is not shared by multiple servers. [0005] 2. The connection length of the DAS interface is short, and the storage syste...

AI Technical Summary

Problems solved by technology

[0004] 1. The storage device is not shared by multiple servers

[0005] 2. The connection length of the DAS interface is short, and the storage system is not easy to expand

[0006] 3. It is not easy to manage and backup remotely

Although the cost of Ethernet is low, the cost of iSCSI HBA is still very high, and the speed is not as good as Fiber Channel. It has not yet replaced Fiber Channel as the mainstream of large-scale enterprise applications. It is currently more promising for small and medium-sized enterprises.

[0013] At present, there is a lower-cost solution for Ethernet SAN based on the AoE (ATA over Ethernet) protocol and Ethernet, which only needs to use a general Ethernet adapter, but it is not widely supported

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