Memory system, memory controller and data caching method

A storage controller and storage system technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as insufficient cache capacity, competition for SAN and NAS resources, and low availability of storage systems, so as to avoid competition for cache resources , flexible storage access services, and the effect of improving availability

Inactive Publication Date: 2009-10-28
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Moreover, due to insufficient cache capacity, there will be resource competition between SAN and NAS, which will affect the availability of the storage system
[0010] It can be seen that the cache capacity of the existing storage system is insufficient to meet the needs of integrating SAN and NAS, resulting in low availability of the storage system

Method used

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  • Memory system, memory controller and data caching method
  • Memory system, memory controller and data caching method
  • Memory system, memory controller and data caching method

Examples

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0057] In order to increase the cache capacity to meet the requirement of integrating SAN and NAS, the present invention sets a high-speed disk inside the SC, and uses the set high-speed disk as a virtual cache.

[0058] It should be noted that the high-speed disk in the present invention is a non-volatile storage medium, and the "high speed" mentioned above is not determined based on an absolute standard. The "high speed" actually refers to the faster reading and writing speed compared to the system disk regarded as a local disk and the disks in the disk cabinet. The reading and writing speed can usually be determined according to the disk speed and the disk interface. rate to distinguish. That is to say, relative to the above-mentioned "high speed", ...

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Abstract

The invention discloses a memory system. A high-speed disk is arranged in a memory controller, and is used as a virtual cache, so that the cache capacity can be infinitely expanded by increasing the capacity of the high-speed disk and the size of the configured virtual cache. Therefore, SAN and NAS memory architectures are integrated into the integrative memory system, the prior physical memory of the memory system is used as the cache of the SAN memory architecture, and the arranged high-speed disk is used as the cache of the NAS memory architecture, so that flexible memory access service can be provided for a network host, the cache capacity can be expanded limitlessly, the condition that the SAN and the NAS compete cache resources caused by deficient cache capacity can be avoided, and the usability of the memory system can be improved. The invention also discloses a memory controller and a data caching method in the memory system.

Description

technical field [0001] The present invention relates to data storage technologies, and in particular to a storage system, a storage controller (Storage Controller, SC) in the storage system, and a data caching method in the storage system. Background technique [0002] Storage systems are used to provide services to network hosts, and can be connected to network hosts through different physical connection methods to form different storage architectures. Wherein, the storage system usually consists of two parts, an SC and a disk cabinet, and a redundant array of independent disks (Redundant Array of Independent Disks, RAID) composed of multiple member disks is set in the disk cabinet. [0003] A commonly used storage architecture is a storage area network (Storage Area Network, SAN). Such as figure 1 As shown, in the SAN storage architecture, the network host and the storage system can be connected through an Internet Protocol (Internet Protocol, IP) network or a Fiber Chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/08H04L29/06H04L12/56H04L29/08
Inventor 上官应兰胡微
Owner NEW H3C TECH CO LTD
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