WO2007007081A2 - Systeme de stockage de donnees - Google Patents

Systeme de stockage de donnees Download PDF

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Publication number
WO2007007081A2
WO2007007081A2 PCT/GB2006/002553 GB2006002553W WO2007007081A2 WO 2007007081 A2 WO2007007081 A2 WO 2007007081A2 GB 2006002553 W GB2006002553 W GB 2006002553W WO 2007007081 A2 WO2007007081 A2 WO 2007007081A2
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WO
WIPO (PCT)
Prior art keywords
data
data storage
storage system
storage devices
computer
Prior art date
Application number
PCT/GB2006/002553
Other languages
English (en)
Other versions
WO2007007081A3 (fr
Inventor
Julian Miles Hockley
Clare Flexman
Martin James Neil Flexman
Original Assignee
Julian Miles Hockley
Clare Flexman
Martin James Neil Flexman
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Julian Miles Hockley, Clare Flexman, Martin James Neil Flexman filed Critical Julian Miles Hockley
Publication of WO2007007081A2 publication Critical patent/WO2007007081A2/fr
Publication of WO2007007081A3 publication Critical patent/WO2007007081A3/fr

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Classifications

    • 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
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1456—Hardware arrangements for backup
    • 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
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1458—Management of the backup or restore process
    • G06F11/1469—Backup restoration techniques

Definitions

  • the present invention relates to a data storage system, and more particularly, but not exclusively, the invention relates to a data storage system capable of data backup and a related method therefor.
  • Computers store data which can be classified generally into two types: firstly, data which comprises software and secondly personal data, information, images, etc which data are usually in the form of files. Both types of data - software and data files - are often and most conveniently stored on a hard disk in the computer.
  • computer includes any data-storage medium or mechanism under control of a separate operating device such as a microprocessor or central processing unit (CPU).
  • a separate operating device such as a microprocessor or central processing unit (CPU).
  • the devices include: mobile telephones, laptops, electronic notebooks and palm held computers, such as personal digital assistants (PDAs).
  • PDAs personal digital assistants
  • a mobile telephone may have hundreds of stored telephone numbers, (home, office and mobile) for personal and business contacts, as well as related email addresses.
  • Mobile telephones are now capable of storing personal settings defined by the user. These include voice commands as well as other attributes that have been programmed by the owner/user. The time to replicate this sort of data, in the event of loss of, or damage to the device, at best may take many hours; at worst such data may have been permanently lost.
  • Mirroring involves writing data to two identical disks and is often referred to as RAID1.
  • Replication involves writing data to two or more disks housed within the same device or located in separate devices.
  • Mirroring is a technique that involves initialising a so called active volume of data storage space (e.g. on a hard disk) and then writing this volume of data onto a second hard disk.
  • the second hard disk is usually proximal to the first or it may be remotely located, even in another country.
  • the reasons for providing a separate, independent, hard storage disk is that, if the first hard disk becomes damaged or corrupted, there is an exact replica of the data on the second or backup hard disk.
  • RAID Redundant Array of Independent Disks
  • the technique known as RAID is described in the RAID Hand Book, by Paul Massiglia, published by the RAID Advisory Board 1997.
  • the technique of RAID backup employs three or more hard disks operating under control of a central processor running software.
  • the RAID structure defines data in terms of blocks; then writes these data blocks, in a cyclic manner, onto the hard disks, in so called striped arrays.
  • These striped arrays are mapped in a cyclical, sequential manner onto the hard disks so that, in the event of a hard disk failure, adjacent disks in the array may be used to recompile lost data.
  • split- mirror backup is a technique in which an active volume of data is copied onto a so called snapshot volume.
  • An advantage of this is that when the contents of active data volumes are changed, old data is automatically mirrored, bit for bit, in the snapshot volume.
  • US Patent US 2002/0083281 discloses a pair of mirrored disk drives which operate under control of disk controllers.
  • the first and second disk drives are arranged to operate under control of first and second disk drive controllers.
  • the first disk drive when instructed to write data, transmits a write request automatically to a second disk controller, whereupon the second disk drive writes the data as mirrored data.
  • An advantage with the system described is that a log file is created from data.
  • the second disk drive controller outputs the log file as an acknowledgment signal to the first disk drive controller.
  • efficient resynchronisation of the mirroring of the two disk drives is rapidly re-established by reference to the log file.
  • One object of the present invention is to provide a data storage system capable of backing up data stored on a variety of computer devices and systems, which is straightforward to install, configure and operate; and which overcomes the aforementioned problems.
  • Another aim of the present invention is to provide a data storage system for backing up data stored on a plurality of independent computer devices, said devices being of a mobile nature.
  • a further aim of the present invention is to provide a data storage system for backing up data stored on a plurality of independent computer devices, said system allowing restoration of the data onto the device from which they were extracted or a data storage device in a different computer device if access to the operating system of such device is permissible.
  • a data storage system comprising: i) a housing supporting at least two data storage devices, said data storage devices being connected such that if one data storage device fails the data stored therein is derivable from the, or each, remaining storage device; ii) communication means for receiving device data from a remote computer; iii) control means for controlling the replication of said received device data in said data storage devices; whereby, in use, the communication means receives data from the remote computer and, under supervision of the control means, said device data is written to the storage devices thereby providing back up storage for said device data. Therefore in the event that either the remote computer is lost or damaged' or the device data are lost or corrupted, said data storage devices provide an image of the computer device and a resilient storage of the device data, from which data retrieval is possible.
  • the storage system is preferably housed in a stand alone structure. Ideally cooling of the structure is performed by natural convection from a plurality of side fins housed in a substantially silent housing. This achieves cooling without any fans, is more energy efficient and renders the storage system inaudible and is therefore more ergonomically / ecologically viable.
  • Storage disks may be mounted on an inner surface of a lid of the housing and connected to control and processing by way of cables that can be easily unplugged, thereby facilitating rapid data retrieval.
  • restoration means is provided for transferring device data stored in the, or each, data storage device to a repaired or replacement computer device.
  • three data storage devices are provided and connected such that data is striped across three disks such that in the event of a single disk failure the missing data may be derived from the remaining two disks.
  • Preferably management of data in said storage system is performed by an operating system different from the operating system of the management of data in the data storage devices.
  • An advantage with this is that in the event that files that are stored are infected or damaged by a virus transmitted by a commonly used operating system, such as MicrosoftTM Windows, the data storage system and its operating system remain unaffected.
  • device sensing means is capable of detecting the proximity of a remote device; interrogating the identity of the device; and if the identity of the device is recognised as an authorised device, automatic backup is initiated.
  • a user is alerted to the presence of a new device and, for example by way of a predefined menu, the user can initiate pairing between the device and storage system so that automatic data backup may subsequently take place.
  • An optional override may be provided which permits the user to cancel the backup.
  • Encryption may be applied to the data in order that they are transmitted in a secure form to the communication means for receiving device data. Similarly in the event of a download from the data storage system (ie in order to restore data) retrieved data may also be encrypted.
  • a replication means includes a transfer means for transferring data from the storage system to said remote computer devices. Suitable book marks, flags or checksums may be used to ensure precise replication.
  • the transfer means may be via a physical connection, such as a data bus, for example a universal serial bus (USB) connector or via a wireless connection, such as infra-red or BluetoothTM connection.
  • a physical connection such as a data bus, for example a universal serial bus (USB) connector
  • a wireless connection such as infra-red or BluetoothTM connection.
  • the replication means includes means to compare the data in the device and data in the data storage devices and is configured to transfer only difference of data in the device to the data storage devices, thereby reducing the amount of data that has to be transmitted.
  • Suitable book marks or flags may be used in order to indicate the extent of previously backed up data in a computer device.
  • a restoration means includes an automatic backup protocol for overseeing the transfer means that transmits data from the data storage device(s) to the new computer device.
  • the transfer means may be a wireless connection such as: infra red, BluetoothTM, Wi- Fi or other wireless networks.
  • the transfer means may alternatively comprise a physical connector of the wire type for connecting ports such as serial, CAT5 or USB cable.
  • said restoration means restores a replacement device to the form of a facsimile of the first device so that its data is exactly identical to the data at the last time that the data was synchronised, replicated, backed up or imaged.
  • the data storage devices on which backup data are stored may be located remotely one from another.
  • the replication means replicates device data stored in the device memory in the data storage devices on a demand or on a scheduled basis.
  • a user may define a specific interval for regular backup or a default backup may be applied.
  • replication means replicates device data stored in the device memory in the data storage devices in a silent unobtrusive manner through a wireless connection when the device is brought within an operating range of the wireless connection.
  • the device may for example be a fixed or portable computer, personal digital assistant (PDA), Internet protocol (IP) telephone, mobile telephone, pager, remote access device, in-vehicle device or home security management and / or automation system.
  • PDA personal digital assistant
  • IP Internet protocol
  • backup may be performed by so called snapshot imaging.
  • File Synchronisation may be used to load data to/from remote file system(s) to such devices as PDAs, mobile telephones, in car entertainment systems, devices using various connectivity methods, such as smart card readers and other forms of electronic tagging and security devices.
  • the storage system may be used as a library or archive from which stored data may be taken on demand and downloaded to a computer device.
  • the data storage system may be configured to download specific data to a specific device when it is within range.
  • stored data includes, for example, music that has been stored and can be sent to an MP3 player.
  • remote storage can be undertaken by the system in order to transmit data to external files for saving and/or to retrieve data from additional storage systems or a data archive.
  • Such a configuration saves space and cost of hardware.
  • the storage system can be configured to operate as a so called thick terminal wherein applications are executed locally. Thick terminals permit access to processor intensive applications close to hardware for improved performance. That is, a terminal in which a user may configure the level of data access in order to, for example, permit the system to run streaming audio and/or video.
  • FTP FTP
  • SMB SMB
  • NFS HTTP
  • Media Proxy Caching HTTP
  • URL Filtering E- Mail Services POP3, SMTP
  • Video Telephone Calls and real time Video Conferencing.
  • the storage system can be configured to operate as a so called thin terminal wherein it merely performs an authentication function and supports applications that are executed, principally at the server, thereby reducing the data carrying requirements of terminals.
  • Thin terminals provide such functionality by enabling access to core and standard applications, thereby providing rapid delivery of a working desktop with almost no exposure to non-Linux borne viruses and a clean restart capability
  • Hybrid terminals benefit from features of both thick and thin formats.
  • the invention may be suitably modified with one or more of the following features: device image storage, remote file synchronisation, and/or data warehouse storage and/or automatic/scheduled back-up.
  • the data storage system may include: managed internet access, features such as wireless keyboard and mouse, digital image storage and management, IR remote control audio/visual presentation storage, DVD play and DVD download, DVD record and store, audio play (CD, MP3), audio record and store (CD, MP3), TV record and store, and IPTV.
  • the data storage system may act as a 'hub' for a variety of media or other server devices and may further include: a TV scheduler, an Internet radio player, a media distributor (such as a local / virtual Microsoft Windows Media Center) or a virtual Microsoft Windows Small Business Server, as well as storage for voice over internet protocol (VOIP).
  • VOIP voice over internet protocol
  • the storage system may be adapted for voice recognition, video conferencing, web access over TV (picture in picture), E-mail access over TV (picture in picture), multi channel video (CCTV, etc) and other functionality as may be determined in the future.
  • the storage system may be located at home or in an office and may further include, without limitation: automation of central storage facilities, such as a mail server, firewall, wireless access point functionality, a proxy server and web servers. These preferred features provide additional flexibility of the storage system.
  • Figure 1 shows an overall diagrammatic view of one embodiment of the storage system
  • Figure 2 shows a flow diagram which performs key stages in an automatic backup of data
  • Figure 3 shows a diagrammatical overview of a system with different devices, peripherals, inputs and outputs.
  • FIG. 1 there is shown a data storage system that has central processing unit (CPU) 1 being housed within a housing in the form of a free-standing box 2.
  • Box 2 houses three hard disks 3A, 3B and 3C and has cooling fins (not shown) on its external surface.
  • Disk 3A provides a first data storage device
  • disk 3B provides a second data storage device
  • disk 3C provides a third storage device.
  • Device data including the operating system of the device
  • the CPU operating system software can distributed across the disks 3A, 3B and 3C, or can be held in custom memory, or stored on both disks and custom memory.
  • the CPU 1 is adapted to communicate with one or more remote devices including a computer device or devices.
  • a remote device may typically be a personal computer (PC) such as a notebook or laptop 100 or a mobile communication device, such as a cellular telephone 120.
  • the remote computer devices may be another type of device that includes a computer and data store.
  • Such a computer device may alternatively be one or more of a, PDA, a pager, a remote access device, an in-vehicle device, or a home security management system or other device.
  • the CPU 1 communicates with one or more of these computer devices through a variety of physical or wireless connections 30, the interfaces for which may form part of the CPU 1.
  • the wireless connections may include infrared, BluetoothTM, and other wireless networks.
  • the physical connection may include wire connecting ports such as serial, USB and other ports.
  • the connections may be controlled by secure means such as password protection, for example by input of a personal identity number (PIN) identity cards, a key or dongle, digital cards, or other secure means.
  • PIN personal identity number
  • the storage system includes replication means to replicate device data (stored in the memory of a remote computer device 100, 120) onto the first data storage device in disk 3A and/or second data storage device in disk 3B and/or third data storage device in disk 3C.
  • Information about data stored in device 100, 120 is transferred to the CPU 1 via a data bus or wireless connection 30.
  • the replication means includes means to compare data in the device 100, 120 and data already backed up in the first 3A and second 3B and third 3C storage devices and to transfer the difference of data from the device 10, 20 to the first 3A and/or second 3B and/or third 3C storage devices.
  • a bookmark reader 70 is used to determine what if any new data requires backing up.
  • CPU 1 includes restoration means 40 to transfer device data stored in the first and/or second and/or third data storage devices 3A, 3B, 3C to a replacement device (not shown), in the event of loss of the original device 100, 120 or to the original device 100, 120 in the event of a loss of data.
  • the restoration means typically includes a data buffer and a transmitting means for uploading replacement data to the device.
  • Data stored in first and second and third data storage devices 3A, 3B, 3C is transferred by transfer means to a data storage means on device 100, 120 for example by way of a wireless connection 30.
  • first, second and third data storage disks 3A, 3B, 3C provide back up storage for device 100, 120 data in the event the device data is lost. Data is retrievable from at least two of the storage disks, with redundancy built into system by way of the third storage disk.
  • a mobile computer such as a laptop 100 is detected by receiver 30 (Step i).
  • the device 100 has data, stored on its hard disk, in the form of operating system software configured with personal settings as well as files and applications.
  • CPU 1 confirms the status of the device 100, for example with reference to a secure password (Step ii).
  • a check as to the amount of new data is performed by comparing already stored data with a bookmark (Step iii). If new data that require backing up are present, the data are replicated under control of CP U 1 bookmark reader 70 and RAID manager 80 (Step iv).
  • Data is copied from the computer device 100 onto disks 3A and/or 3B and/or 3C.
  • that data can be replaced by way of a transfer of data from disks 3A and/or 3B and/or 3C.
  • Such transfer of data is used to restore the device 100 simply and quickly so that its data is identical to the data contained in it when it was last synchronised, replicated, backed up or imaged. It is not only the data that is restored, but also the same operating system software configured with personal settings as well as files and applications.
  • the storage system restores a new second device to a facsimile of the first device. In practice it may be desirable to create a facsimile with only selected files, applications and/or settings.
  • the CPU may be configured to accomplish this.
  • Storage disks 3A and 3B and 3C are provided for extra security in case one should fail.
  • a further data storage device may be provided in a robust fire-proof and water proof housing in a location (e.g. in a building or vehicle) remote from the first, second and third data storage devices 3A, 3B and 3C and the CPU 1. Again data may be replicated and stored from the first, and/or a second and/or third data storage devices to the further storage device.
  • Management of data in the storage system may be performed by an operating system different from the operating system for the management of data in the first and second and third data storage devices of the CPU. This tends to prevent viruses, contained in a WORD file from executing when backed up in the data storage system.
  • the operating system of the CPU in the data storage system may be a LinuxTM, Free BSDTM or Open BSDTM based operating system.
  • the storage system can be used with other apparatus 60 (with or without a computer) as an additional secure storage device for data, e.g. data relating to audio, video, photos, music, MIDI interfaces.
  • housing 2 incorporating two or more storage devices may be sold separately for use with a device incorporating a computer to create the data storage system of the invention.
  • a session may be established using the standard USB protocol e.g. CPU auto-detects the device and mounts (makes available to the CPU) any file systems as appropriate
  • a system code may be triggered upon the arrival of a file system
  • the system may review configuration information of defined actions (which may be profiled so as to be specific to an individual user of the system) so that the system may decide what action to take •
  • a new device e.g. a new camera
  • the system may perform a set of default actions and may incorporate the new device into the configuration information
  • the standard action taken may be to copy the files into a library within a resilient storage system (RAID).
  • RAID resilient storage system
  • Each new file may be placed into an appropriate directory structure such as a date/time - stamped directory although choices may be configured to define alternative directory structures.
  • Standard network protocols may be used to establish if the device (e.g. a lap-top computer) is available or the storage system responds when the device makes itself known through a standard network connection to the CPU 10.
  • the system code monitors and triggers upon the establishment of a connection with the device.
  • the system reviews configuration information of defined actions (which may be profiled so as to be specific to an individual user of the system) so that the system determines what action to take.
  • the storage system may perform a set of default actions and may incorporate the new device into the configuration information.
  • a set of user instructions may be provided (e.g. in the form of pull down menus) so as to assist a user to make key choices and set user defined parameters.
  • the standard action taken may be to copy or synchronise files or data from the device into a library or product (e.g. a calendar system) that may be provided within the system.
  • a library or product e.g. a calendar system
  • This is considered to be of particular benefit, for example to a user who works at more than one location (e.g. home and office) and is keen to backup and synchronise data on which work has been done, particularly if this is on more than one computer.
  • Each new file may be placed into an appropriate directory structure such as a date/time - stamped directory although choices may be configured to define alternative directory structures.
  • Bluetooth connection Files are up-loaded to the storage system via the following process:
  • the system code monitors and triggers upon the arrival of relevant services e.g. availability of a diary within a mobile telephone
  • the system reviews configuration information of defined actions (which may be profiled so as to be specific to an individual user of the system) so that the system may decide what action to take
  • the system may perform a set of default actions and may incorporate the new device into the configuration information
  • Standard action taken may be to copy or synchronise the files or data from the device into a library or product (e.g. a diary system within the system)
  • a library or product e.g. a diary system within the system
  • Files are identified that are new to the system and need to be copied so that duplicate copies of existing files are avoided (although choices, such as to make a "versioned copy" may be offered by over-riding the standard option using the configuration information
  • Each new file may be placed into an appropriate directory structure such as a date/time - stamped directory although choices may be configured to define alternative directory structures.
  • the system code monitors and triggers upon the arrival of relevant services or data (e.g. availability of an address book within a PDA)
  • the system reviews configuration information of defined actions (which may be profiled so as to be specific to an individual user of the system) so that the system may decide what action to take
  • the system may perform a set of default actions and may incorporate the new device into the configuration information
  • the standard action taken may be to copy or synchronise the files or data from the device into a library or product (e.g. a address book system within the system)
  • a library or product e.g. a address book system within the system
  • Each new file may be placed into an appropriate directory structure such as a date/time - stamped directory although choices may be configured to define alternative directory structures.
  • a device is such that it is possible to take and subsequently restore to that device or to a replacement device an image of the operating system of the device including, settings and data
  • Software may be loaded into the device via a mechanism such as a CD or from the CPU to create an image of the device that is then stored on the CPU in a date/time-stamped or such other archive as may be specified. This process may utilise wireless or physical connections.
  • the invention may take a form different to that specifically described above.
  • data could be stored in two data storage devices in the CPU that are mirror images of each other.
  • the replication means may transfer all the data from a device to the storage devices rather than the difference of data compared between the two.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

L'invention concerne un système de stockage de données. Ledit système comprend un logement (18) supportant trois dispositifs de stockage de données (3A, 3B et 3C). Ces dispositifs de stockage de données sont connectés, de telle manière que si un dispositif de stockage de données est défaillant, les données qui y sont stockées peuvent être dérivées à partir de chaque autre dispositif de stockage. La présence d'un dispositif informatique, tel qu'un portable ou un téléphone mobile (100 ou 120) est détecté par le système de stockage. Lorsque ceci se produit, suite à des commandes spécifiées par un utilisateur, une sauvegarde automatique des données de dispositif stockées dans la mémoire du dispositif informatique est initiée. Une fois établie, la sauvegarde est réalisée automatiquement et indépendamment de toute entrée ou commande d'utilisateur. Dans le cas de perte ou de dommage occasionné au dispositif informatique, des données peuvent être restaurées par transfert des données de dispositif stockées dans les dispositifs de stockage de données au dispositif informatique d'origine ou à un nouveau dispositif de remplacement.
PCT/GB2006/002553 2005-07-12 2006-07-11 Systeme de stockage de donnees WO2007007081A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0514246.8 2005-07-12
GB0514246A GB0514246D0 (en) 2005-07-12 2005-07-12 Data storage system

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WO2007007081A2 true WO2007007081A2 (fr) 2007-01-18
WO2007007081A3 WO2007007081A3 (fr) 2007-11-29

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EP2560337A4 (fr) * 2010-05-11 2016-12-28 Zte Corp Procédé et système permettant d'obtenir un disque à mémoire flash usb sans fil
CN117724658A (zh) * 2023-12-15 2024-03-19 北京宜通华瑞科技有限公司 基于嵌入式Linux系统的数据安全存储方法及系统

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CN113112971B (zh) * 2021-03-30 2022-08-05 上海锣钹信息科技有限公司 一种midi残缺音播放方法

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EP2560337A4 (fr) * 2010-05-11 2016-12-28 Zte Corp Procédé et système permettant d'obtenir un disque à mémoire flash usb sans fil
CN103678038A (zh) * 2013-11-29 2014-03-26 上海闻泰电子科技有限公司 移动设备数据自动备份系统及方法
CN117724658A (zh) * 2023-12-15 2024-03-19 北京宜通华瑞科技有限公司 基于嵌入式Linux系统的数据安全存储方法及系统

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