A hard disk implementation method based on memory card array architecture

Abstract

The present invention provides a storage card array architecture based hard disk implementation method, comprising the following steps: connecting N storage channels in parallel to a hard disk controller, and connecting M storage cards in parallel to a signal bus of each storage channel; allocating a relative card address having a unique identifier to each storage card by the hard disk controller; reading data of a file, and determining, according to a logic block address of the file, a storage card in which the file is stored; sending a control command to the signal bus to select the storage card so as to switch the storage card from a standby state to a bus occupying state; completing a file data read / write operation with the selected storage card; after the current file read / write operation is completed, sending a control command to the signal bus to switch the storage card from the bus occupying state to the standby state. According to technical solutions of the invention, in terms of the hardware architecture, the high speed switching circuit is omitted, and therefore, the load of the hard disk controller and the cost are reduced.

Description

technical field [0001] The invention relates to the field of data storage, in particular to a method for realizing a hard disk based on a memory card array architecture. Background technique [0002] In recent years, with the increasing application of solid-state hard disks based on flash media, greater requirements have been placed on the single capacity of such hard disks, especially in cloud servers, big data servers, redundant disk arrays, etc. that require massive amounts of data. storage applications. [0003] The existing solid-state hard disk generally adopts the architecture of Flash controller + solid-state storage medium NAND Flash. When this architecture realizes large-capacity, especially ultra-large-capacity solid-state hard disk above TB level, due to the physical characteristics of NAND Flash itself, it greatly increases the number of hard disks. The technical difficulty and hardware cost of controller implementation. For example, the number of page data wr...

AI Technical Summary

Problems solved by technology

For example, in the invention patent application 2014100494177 proposed by the applicant, the technical solution is a method for implementing a super-large-capacity solid-state hard disk based on the memory card array architecture. The chip selection of the card, but this technical solution also has the following defects: the control of the high-speed switch increases the load of the controller, and the existence of the high-speed switch circuit increases the complexity of the circuit and circuit board design, and also increases the hardware cost.

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