Storage device and method thereof for integrating network attached storage with cloud storage services

• US 9,614,924 B2
• Filed: 12/18/2009
• Issued: 04/04/2017
• Est. Priority Date: 12/22/2008
• Status: Active Grant

• Current Assignee: CTERA Networks Limited
• Original Assignee: CTERA Networks Limited
• Inventors: Brand, Aron
• Primary Examiner(s): Zele, Krista
• Assistant Examiner(s): BELCHER, HERMAN A
• Application Number:
  US12/641,559
• Publication Number:
  US 20100161759A1
• Time in Patent Office: 2,664 Days
• Field of Search: 709218
• CPC Class Codes: G06F 16/178 Techniques for file synchronisation in file systems
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 9/0618 Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
• CPC Class Codes: H04L 9/3242 involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC

Abstract

A network attached storage device for performing network attached storage operations with cloud storage services. The device comprises at least one network controller for communicating with a plurality of clients over a local area network (LAN) and with a cloud storage service (CSS) over a wide area network (WAN); a plurality of storage devices for locally storing data in the device; a CSS module for at least synchronizing between data locally stored in the plurality of storage devices and data stored in the CSS; and a processor for enabling the plurality of clients to perform file-based operations on the device using a file sharing protocol.

Claims

1. A network attached storage device for performing network attached storage operations with cloud storage services, wherein the cloud storage services are geographically distributed from the network attached storage device, comprising:

at least one network controller for communicating with a plurality of clients over a local area network (LAN) and with a cloud storage service (CSS) over a wide area network (WAN);

a plurality of storage devices for locally storing data in the network attached storage device;

a CSS module for at least synchronizing between data files locally stored in the plurality of storage devices and data stored in the CSS, wherein the CSS includes a plurality of cloud connectors for providing a unified communication protocol with a plurality of providers of the cloud storage services, wherein each cloud connector is configured to translate between a unified protocol utilized by the network attached storage device and a respective protocol implemented by one of the plurality of the providers of the cloud storage services communicatively connected to the cloud connector for enabling the synchronization of the data files and for performing file-system operations with the respective cloud storage service; and

a processor for enabling the plurality of clients to perform file-based operations on the network attached storage device using a file sharing protocol.

2. The device of claim 1, wherein the network attached storage further comprising:

a network-attached storage (NAS) module for emulating the network attached storage device as a NAS device; and

a plurality of storage controllers for controlling the plurality of storage devices.

3. The device of claim 2, wherein the network attached storage further includes a non-volatile memory for saving settings and configuration parameters.

4. The device of claim 2, wherein each of the plurality of storage controllers is at least one of a small computer system interface (SCSI), a serial advanced technology attachment (SATA), a universal serial bus (USB), a fibre channel (FC), and a serial attached SCSI (SAS).

5. The device of claim 1, wherein the CSS module is configured to synchronize the data by:

marking all data files that have been changed since the last synchronization;

dividing all marked files into variable size blocks;

assigning each block with a unique code;

determining which blocks have been modified using the unique codes of the blocks; and

synchronizing the modified blocks such that both the CSS and the plurality of storage devices include a consistent version of each file that has been changed.

6. The device of claim 2, wherein the plurality of cloud connectors further enabling connections between the network attached storage device and remote storage devices;

and

a web portal for allowing at least accessing files maintained by the CSS using a web interface.

7. The device of claim 6, wherein the remote storage devices and the cloud storage providers reside in one or more data centers.

8. The device of claim 1, wherein the file sharing protocol is at least any of:

a network file system (NFS) and a common internet file system (CIFS).

9. The device of claim 1, wherein the network attached storage further includes a virtual cloud drive utilized for exposing files stored in the CSS.