KR101509183B1 - Storage device directly attached to network - Google Patents

Storage device directly attached to network Download PDF

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Publication number
KR101509183B1
KR101509183B1 KR20140140155A KR20140140155A KR101509183B1 KR 101509183 B1 KR101509183 B1 KR 101509183B1 KR 20140140155 A KR20140140155 A KR 20140140155A KR 20140140155 A KR20140140155 A KR 20140140155A KR 101509183 B1 KR101509183 B1 KR 101509183B1
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KR
South Korea
Prior art keywords
disk
network
failover
disks
fail
Prior art date
Application number
KR20140140155A
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Korean (ko)
Inventor
김상훈
박준모
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주식회사 앤다스
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Priority to KR20140140155A priority Critical patent/KR101509183B1/en
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Publication of KR101509183B1 publication Critical patent/KR101509183B1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2033—Failover techniques switching over of hardware resources

Abstract

The present invention relates to a storage device directly attached to network comprising: a network (220) with communications network that realizes intercommunication between electronic equipments; a failover disk (230) which is directly attached to the network (220) and realizes failover of the disk; and multiple devices (211-21N) which access the network (220) and write data on the failover disk (230), or execute the command to read the data saved in the disk.

Description

[0001] STORAGE DEVICE DIRECTLY ATTACHED TO NETWORK [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a network direct attach type storage apparatus, and more particularly, to a redundant array of independent disks (RAID), which is equipped with a failover disk that directly attaches to a network and realizes fail- To a network direct attach type storage device that is cost effective and simpler in configuration than a method of implementing disk failover using a failover server with a card mounted therein.

In recent years, as the number of large-capacity multimedia files increases and the importance of personal digital information increases, data storage devices become increasingly high-capacity and highly integrated.

Thus, there is a need to recognize and repair the failures of the storage means, as physical errors that occur on storage means can lead to data loss to very large areas rather than merely a small area of damage.

1 shows a network storage device according to the prior art.

1, a network storage device 100 according to the related art includes a plurality of devices 111 to 11N, a network 120, a plurality of failover servers 131 to 13N, and a plurality of disks 141 To 14N, 151 to 15N).

Each of the plurality of devices 111 to 11N is connected to the network 220 and executes a command to write or read data to or from the plurality of disks 141 to 14N and 151 to 15N Lt; / RTI >

The plurality of failover servers 131 to 13N includes a first failover server 131 to an Nth failover server 13N and the first failover server 131 includes a first disk 141 to an Nth failover server 13N, And the N-th failover server 13N manages the first to N-th disks 151 to 15N.

That is, each of the first to third failover servers 131 to N may be implemented by mounting a RAID (Redundant Array of Independent Disks) card in each of the plurality of disks 141 to 14N and 151 to 15N And a method for recognizing and repairing failures for the system.

In general, a RAID system improves reliability by partitioning and replicating data across a plurality of hard disk drives (or other types of storage media) collectively referred to as arrays, and in some cases, Thereby improving the throughput of the device (hereinafter referred to as " host ").

At this time, for the host, the RAID array may appear as one or more monolithic storage areas. When a host wants to communicate with a RAID system (such as read, write, etc.), the host communicates as if the RAID array were a single disk.

The RAID system then cooperates with such communications to process communications to implement a particular RAID level. The RAID level can be designed to achieve some desired balance between various tradeoffs such as reliability, capacity, speed, and the like.

For example, RAID (Level) 0 distributes data across several disks in a way that provides improved speed and utilizes virtually the full capacity of the disk, but if a disk fails, all the data on that disk Will be lost.

RAID (level) 1 uses two (or more) disks that each store the same data, so that no data is lost as long as one disk is alive. The total capacity of the array is substantially the capacity of a single disk, RAID (level) 5 combines three or more disks in a manner that protects the data against loss on any one disk, and the storage capacity of the array is one Disk.

However, the prior art has the following problems in implementing defect recognition and recovery of a disk through the RAID system.

First, the prior art has had limitations imposed by the architecture of the RAID system, such that in many cases all communication with the RAID system should be directed to a single server that controls and manages the RAID system.

Second, the prior art has a problem that arises from the configuration or layout of data on a disk having a RAID system. For example, in special cases, a RAID level has to be selected and a condition that a storage device be allocated in the RAID system be imposed before the RAID system can be utilized.

Third, because the prior art needs to use custom hardware or software to implement a solution to solve the problem, the situation could be worse and there was a problem of increasing the cost associated with the implementation of such a solution.

Korean Patent Publication No. 10-2011-0088579

Disclosure of Invention Technical Problem [8] The present invention provides a failover server having a conventional RAID (Redundant Array of Independent Disks) card mounted therein by providing a failover disk that directly attaches to a network and realizes failover of the disk The present invention is to provide a direct-attached storage device of a network in which the cost is reduced and the configuration is simplified as compared with a method of implementing failover of a disk using the disk.

According to an aspect of the present invention, there is provided a network direct attach type storage device comprising: a network (220) for establishing a communication network to realize mutual communication between electronic devices; A failover disk 230 attached directly to the network 220 to implement failover of the disk; And a plurality of devices connected to the network and performing a command to write data to or read data from the disk of the fail-over disk, 21N). ≪ / RTI >

The present invention has the technical effect of reducing the cost and simplifying the configuration as compared with a method of implementing the failover of the disk using the failover server in which the conventional RAID card is mounted.

1 shows a network storage device according to the prior art.
2A schematically shows a configuration of a network direct attach type storage apparatus according to the present invention.
2B shows a detailed configuration of a fail-over disk according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

2A schematically shows a configuration of a network direct attach type storage apparatus according to the present invention.

Referring to FIG. 2A, a network direct attach storage 200 according to the present invention includes a plurality of devices 211 to 21N, a network 220, and a failover disk 230.

The plurality of devices 211 to 21N are electronic devices connected to the network 220 and capable of writing or reading data to and from the failover disk 230. For example, , A smart phone, a tablet PC, a PDA (Personal Digital Assistant), a PMP (Portable Media Player), or the like.

The network 220 is connected to the plurality of devices 211 to 21N and the failover disk 230 to implement communication such as the Internet, a wide area network (WAN), a metropolitan area network (MAN), a LAN (LAN), a token ring, a wireless network, a fiber channel network, an Ethernet, a token ring LAN, WiFi, WiMax, and the like.

The failover disk 230 is a storage device that is directly attached to the network 220 to enable failover of the disk. The detailed configuration and functions of the failover disk 230 will be described with reference to FIG. 2B.

2B shows a detailed configuration of a fail-over disk according to the present invention.

2B, the failover disk 230 according to the present invention includes a bus 231, an Ethernet controller 232, a USB device controller 233, a first memory 234a, a second memory 234b, A disk controller 235, a first disk 236-1 to an Nth disk 236-N, and a processor 237.

The bus 231 serves as a common transmission path for connecting the components 232 to 237 and transmitting data and power between the components.

The Ethernet controller 232 provides an interface and controls the plurality of devices 211 to 21N connected to the network 220 and the failover disk 230 so that they can communicate with each other.

When the failover disk 230 is powered off, the USB device controller 233 is directly connected to the plurality of devices 211 to 21N that operate as a USB host when the failover disk 230 operates as a USB device, To be transmitted and received.

The first memory 234a may be a volatile memory such as a dynamic random access memory (DRAM) or a static random access memory (SRAM), and the second memory 234b may be a flash memory, a phase change random access memory (PRAM) And a nonvolatile memory such as a resistive memory.

In this case, the boot code or program code stored in the second memory 234b may be loaded into the first memory 234a under the control of the processor 237. [

The disk controller 235 controls the operation of each of the plurality of disks 236-1 to 236-N so that the plurality of devices 211 to 21N and the processor 237 can communicate with each other. In this case, Serial Advanced Technology Attachment (SATA), Parallel Advanced Technology Attachment (PATA), or the like can be used as the protocol.

A plurality of first disks 236-1 to 236-N are storage media for storing data such as a hard disk drive (HDD), an optical disk drive (ODD) ), A solid state disk (SSD), or the like.

In the case of the present invention, each of the first to third discs 236-1 to 236-N is directly attached to the network 220, Can be recognized by detecting the fail value of the IO signal of each of the first to Nth disks 236-1 to 236-N.

In this case, the defect repair of the disk is performed by replacing the corresponding disk in which the defect occurred.

In the present invention, each of the first to third disks 236-1 to 236-N is directly attached to the network 220, And redundant storage (mirror).

In this case, for example, all the data stored in the first disk 236-1 is copied to the second disk 236-2, and the first disk 236-1 and the second disk 236-2 236-2) are continuously synchronized.

 The processor 237 includes an Ethernet controller 232, a USB device controller 233, a first memory 234a, a second memory 234b, a disk controller 235, 0.0 > 236-N < / RTI >

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention.

211 to 21N: first to Nth devices
220: Network
230: Failover disk
231: Bus
232: Ethernet Controller
234a: first memory
234b: second memory
235: Disk controller
236-1 to 236-N: First to Nth disks
237: Processor

Claims (8)

A network establishing a communication network to implement mutual communication between electronic devices;
A failover disk attached directly to the network to implement failover of the disk; And
And a plurality of devices connected to the network and performing an instruction to write data to the fail-over disk or to read data stored in the disk,
Wherein the fail-
An Ethernet controller for providing and controlling an interface for allowing the plurality of devices and the fail-over disk to communicate with each other;
A plurality of disks for storing data;
A disk controller for controlling the plurality of disks;
When the fail-over disk is powered off,
Wherein the failover disk is directly connected to the plurality of devices operating as a USB host when the failover disk operates as a USB device, so that data can be transmitted and received; And
And a processor for controlling the Ethernet controller, the plurality of disks, the disk controller, and the USB device controller,
The defect of the plurality of discs may be,
And detecting a fail value of the IO signal of each of the plurality of disks.
delete 2. The disk drive according to claim 1,
(SATA) or Parallel Advanced Technology Attachment (PATA) protocol is used. The method of claim 1,
Wherein the storage unit includes any one of a hard disk drive (HDD), an optical disk drive (ODD), and a solid state disk (SSD).
delete delete The network according to claim 1,
Such as the Internet, a Wide Area Network (WAN), a Metropolitan Area Network (MAN), a Local Area Network (LAN), a token ring, a wireless network, a fiber channel network, an Ethernet, a token ring LAN, , WiFi, and WiMax is used as the storage unit. 2. The method of claim 1,
Wherein the storage device is one of a personal computer (PC), a smart phone, a tablet PC, a PDA (Personal Digital Assistant), and a PMP (Portable Media Player).
KR20140140155A 2014-10-16 2014-10-16 Storage device directly attached to network KR101509183B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200109547A (en) 2019-03-13 2020-09-23 김한규 Method and network attached storage apparatus for sharing files between computers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100069067A (en) * 2008-12-16 2010-06-24 (주)인디링스 Redundant array of independent/inexpensive disks controller of independently managing file system
KR20110030002A (en) * 2009-09-17 2011-03-23 장 페트러스 Network direct attached storage device with active-active multiplexing unit or port selector unit
KR20110030006A (en) * 2009-09-17 2011-03-23 장 페트러스 Network direct attached storage device with swithing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100069067A (en) * 2008-12-16 2010-06-24 (주)인디링스 Redundant array of independent/inexpensive disks controller of independently managing file system
KR20110030002A (en) * 2009-09-17 2011-03-23 장 페트러스 Network direct attached storage device with active-active multiplexing unit or port selector unit
KR20110030006A (en) * 2009-09-17 2011-03-23 장 페트러스 Network direct attached storage device with swithing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200109547A (en) 2019-03-13 2020-09-23 김한규 Method and network attached storage apparatus for sharing files between computers

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