Storage device connectting memory nodes having transmission function and data processing method

Abstract

According to one embodiment, a storage device includes a plurality of memory nodes. Each of memory nodes includes a plurality of input ports, a plurality of output ports, a selector, a packet controller and a memory. The selector outputs a packet input to the input port to one of the output ports. The packet controller controls the selector. The memory stores data. The memory nodes are mutually connected at the input ports and the output ports. The memory node has an address that is determined by its physical position. The packet controller switches the output port that outputs the packet based on information including at least a destination address of the packet and an address of the memory node having the packet controller when receiving a packet that is not addressed to the memory node having the packet controller.

Description

[0001] This application claims priority based on Japanese Patent No. 2010-252336 filed in Japan on November 10, 2010, the entire contents of which are hereby incorporated by reference. technical field [0002] Embodiments relate to a storage device and a data processing method in which memory nodes having a transfer function are mutually connected, and relate to, for example, a method of controlling transfer of data packets in the storage device. Background technique [0003] As a storage device that can easily expand capacity, a storage device in which memory nodes having a transfer function are mutually connected is considered. When receiving a packet addressed to its own memory node, each memory node performs predetermined processing such as reading or writing. On the other hand, when receiving a packet not addressed to its own memory node, each memory node transfers the received packet to an appropriate other memory node. By repeating appropriate transfer by each memory...

AI Technical Summary

Problems solved by technology

[0005] However, when a new memory node is added for capacity expansion, or when an existing memory node is deleted due to a failure or the like, it is necessary to update the path designation table of each memory node, and this update procedure is cumbersome.

In particular, when the number of storage nodes is large, the maintenance / management cost of the route designation table becomes huge, which limits the scalability of the capacity.

[0006] In addition, in a memory device in which memory nodes having a transfer function are connected to each other, when writing / reading a plurality of data to / from a plurality of memory nodes, it is generally difficult to simultaneously write and read a plurality of data through the same wiring. communication, it is easy to generate data transmission standby

This data transfer standby leads to an increase in the time required for data writing / reading

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