Data backup system including a data protection component

• US 7,899,662 B2
• Filed: 11/28/2006
• Issued: 03/01/2011
• Est. Priority Date: 10/12/2005
• Status: Active Grant

• Current Assignee: Storage Appliance Corp.
• Original Assignee: Storage Appliance Corp.
• Inventors: Lemelev, Alex, Collins, Ian, Li, Eric, Chowdhary, Yousuf, Brunet, Jeffrey
• Primary Examiner(s): Shah; Kamini S
• Assistant Examiner(s): GEBRESILASSIE, KIBROM K
• Application Number:
  US11/605,770
• Publication Number:
  US 20070143096A1
• Time in Patent Office: 1,554 Days
• Field of Search: 703/23, 703/24, 703/25, 707/1, 707/650, 707/654, 717/100, 717/138, 711/162, 711/115, 714/29, 710/1, 710/5, 710/62, 710/313
• US Class Current: 703/24
• CPC Class Codes: G06F 11/1451 by selection of backup contents
• CPC Class Codes: G06F 11/1456 Hardware arrangements for backup
• CPC Class Codes: G06F 11/1461 Backup scheduling policy
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0632 by initialisation or re-initialisation of storage systems
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/0676 Magnetic disk device
• CPC Class Codes: G06F 3/0677 Optical disk device, e.g. CD-ROM, DVD
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]

Abstract

A data backup system is provided for backing up data files from a data source and for securing those data files against accidental modification or deletion. The system comprises storage and a data protection component that includes an application programming interface defining a command set. The system can also comprise a backup application that is configured to use the commands of the command set. The data protection component allows applications that use the commands of the command set, such as the backup application, to access the storage of the system. The data protection component prevents operating systems and applications that do not use the commands of the command set from accessing the storage. The data protection function of the data protection component can optionally be disabled to allow open access to the storage.

Claims

1. A data backup system comprising:

a communication interface for communication with a data source;

a first storage device including a first logical storage area including a backup application;

an emulation component coupled to and in communication with the first logical storage area, the emulation component comprising logic configured to;

represent the first logical storage area as an auto-launch device;

receive auto-launch device type commands from the data source addressed to the auto-launch device, translate the auto-launch device type commands to first storage device type commands, and send the first storage device type commands to the first logical storage area;

receive first storage device type responses from the first logical storage area, translate the first storage device type responses into auto-launch device type responses, and send the auto-launch device type responses to the data source;

and

a data protection component coupled to and in communication between the emulation component and the communication interface, the data protection component including an application programming interface defining a command set, the backup application being configured to use a command of the command set.

2. The data backup system of claim 1 wherein the first storage device further includes a second logical storage area and the emulation component further comprises logic configured to:

represent the second logical storage area as a second storage device including a writable data storage medium;

receive second storage device type commands from the data source addressed to the second logical storage area and send the second storage device type commands to the second logical storage area; and

receive second storage device type responses from the second logical storage area and send the second storage device type responses to the data source.

3. The data backup system of claim 2 wherein the backup application is configured to execute on the data source and to use the command of the command set to write data files from the data source to the second logical storage area.

4. The data backup system of claim 1 wherein the data protection component is switchable between

a protection state wherein the data protection component uses the application programming interface to selectively limit communications with the first storage device, and

an open state wherein the data protection component does not limit communications with the first storage device.

5. The data backup system of claim 4 further comprising a mechanical switch to switch the data protection component between the protection state and the open state.

6. The data backup system of claim 4 wherein the data protection component is configured to receive a command to switch the data protection component between the protection state and the open state.

7. The data backup system of claim 4 wherein the backup application includes an exit routine configured to send a command to the data protection component to revert to the protection state.

8. The data backup system of claim 4 wherein the data protection component is configured to power-up in the protection state.

9. The data backup system of claim 4 wherein the data protection component is configured to revert to the protection state from the open state after being in the open state for a set period of time.

10. The data backup system of claim 1 wherein the data protection component is switchable between

a first protection state wherein the data protection component uses the application programming interface to selectively limit communications with the first logical storage area, and

a first open state wherein the data protection component does not limit communications with the first logical storage area.

11. The data backup system of claim 10 wherein the first storage device further includes a second logical storage area and wherein the data protection component is further switchable between

a second protection state wherein the data protection component uses the application programming interface to selectively limit communications with the second logical storage area, and

a second open state wherein the data protection component does not limit communications with the second logical storage area.