MULTIPLE POINTS IN TIME DISK IMAGES FOR DISASTER RECOVERY

• US 20120151273A1
• Filed: 02/07/2012
• Published: 06/14/2012
• Est. Priority Date: 03/17/2010
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Zerto Incorporated
• Inventors: Barash, Gil, Burshan, Chen, Ben Or, Tomer
• Granted Patent: US 9,389,892 B2
• Time in Patent Office: Days
• US Class Current: 714/41
• CPC Class Codes: G06F 11/2094 Redundant storage or storage space G06F11/2056 takes precedence
• CPC Class Codes: G06F 11/2205 using arrangements specific to the hardware being tested
• CPC Class Codes: G06F 11/263 Generation of test inputs, e.g. test vectors, patterns or sequences ; with adaptation of the tested hardware for testability with external testers
• CPC Class Codes: G06F 2009/45579 I/O management, e.g. providing access to device drivers or storage
• CPC Class Codes: G06F 2009/45583 Memory management, e.g. access or allocation
• CPC Class Codes: G06F 9/45533 Hypervisors; Virtual machine monitors
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects

Abstract

An enterprise disaster recovery system, including a processor for running at least one data application that reads data from at least one data disk and writes data to the at least one data disk over a period of time, a recovery test engine that (i) generates in parallel a plurality of processing stacks corresponding to a respective plurality of previous points in time, each stack operative to process a command to read data at a designated address from a designated data disk and return data at the designated address in an image of the designated data disk at the previous point in time corresponding to the stack, and (ii) that generates in parallel a plurality of logs of commands issued by the at least one data application to write data into designated addresses of designated data disks, each log corresponding to a respective previous point in time.

Claims

1. An enterprise disaster recovery system, comprising:

at least one data disk;

a processor for running at least one data application that reads data from said at least one data disk and writes data to said at least one data disk over a period of time;

a recovery test engine that (i) generates in parallel a plurality of processing stacks corresponding to a respective plurality of previous points in time within the period of time, each stack operative to process a command to read data at a designated address from a designated one of said at least one data disk and return data at the designated address in an image of the designated data disk at the previous point in time corresponding to the stack, and (ii) that generates in parallel a plurality of logs of commands issued by the at least one data application to write data into designated addresses of designated ones of said plurality of data disks, each log corresponding to a respective previous point in time, wherein the plurality of previous points in time within the period of time are specified arbitrarily by a user of the system.

2. The system of claim 1 wherein said recovery test engine (iii) stops operation of any designated one of the stacks in response to receiving a command to stop operation of the designated stack.

3. A method for testing enterprise disaster recovery, comprising:

receiving an arbitrarily designated plurality of points in time for conducting data recovery tests in parallel;

generating in parallel a plurality of processing stacks, each stack corresponding to one of the designated points in time, and each stack operative to receive a command issued by at least one data application to read data from a designated address from a designated data disk and to return data at the designated address in an image of the designated data disk at the designated point in time corresponding to the stack;

further generating in parallel a plurality of write commands issued by the at least one data application to write data into designated addresses of designated data disks; and

logging the write commands in a plurality of logs, each log corresponding to one of the designated points in time.

4. The method of claim 3 further comprising stopping operation of any designated one of the stacks in response to receiving a command to stop operation of the designated stack.

5. A system for cloud-based data services for multiple enterprises, comprising:

a plurality of cloud hypervisors that cooperatively provide cloud-based services to multiple enterprises, each hypervisor comprising;

a plurality of cloud virtual servers, each cloud virtual server being associated with an enterprise;

at least one cloud virtual disk that is read from and written to by said at least one virtual server, each cloud virtual disk being associated with an enterprise; and

a cloud virtual data services appliance, which provides cloud-based data services;

a cloud data services manager which coordinates all of said virtual data services appliances; and

a plurality of cloud connectors, one cloud connector per enterprise, for connecting the cloud virtual servers and the cloud virtual disks that are associated with that enterprise, with all of said cloud virtual data services appliances and with said cloud data services manager.

6. The system of claim 5 further comprising, for each enterprise, one or more enterprise virtual servers, wherein said cloud data services manager designates a group of one or more of the cloud virtual servers that are associated with the enterprise as being a cloud target virtual protection group for one or more of that enterprise'"'"'s virtual servers, and wherein the cloud virtual data services appliance of each cloud hypervisor that comprises a cloud virtual data server that belongs to the cloud target virtual protection group, receives copies of write requests issued from one or more of that enterprise'"'"'s virtual servers.

7. The system of claim 6 wherein the cloud virtual data services appliance of each cloud hypervisor that comprises a cloud virtual data server belonging to a cloud target virtual protection group of an enterprise, periodically applies the copies of write requests to one or more of those cloud virtual disks in the cloud hypervisor that are associated with the enterprise.

8. The system of claim 6 wherein the cloud target virtual protection group of an enterprise comprises cloud virtual servers from the same one of said cloud hypervisors.

9. The system of claim 6 wherein the cloud target virtual protection group of an enterprise comprises cloud virtual servers from more than one of said cloud hypervisors.

10. The system of claim 6 wherein at least one of said cloud hypervisors comprises at least one cloud virtual server that belongs to a cloud target virtual protection group for a first enterprise, and at least one cloud virtual server that belongs to a cloud target virtual protection group for a second enterprise.

11. The system of claim 6 wherein said cloud data services manager enables data recovery from an enterprise'"'"'s virtual servers to the enterprise'"'"'s cloud target virtual protection group.

12. The system of claim 6 wherein each of said cloud hypervisors further comprises a tapping driver in communication with its said at least one cloud virtual server, wherein said tapping driver intercepts I/O requests made by any one of that cloud hypervisor'"'"'s at least one cloud virtual server to any one of that cloud hypervisor'"'"'s at least one cloud virtual disk, and wherein that cloud hypervisor'"'"'s virtual data services appliance receives the intercepted I/O requests from said tapping driver, and provides its cloud-based data services therefrom.

13. The system of claim 12 wherein of said cloud data services manager enables data recovery from each enterprise'"'"'s cloud target virtual protection group to that enterprise'"'"'s virtual server.

14. The system of claim 5 further comprising, for each enterprise:

one or more enterprise virtual servers; and

an enterprise connector for connecting the enterprise'"'"'s virtual servers with the enterprise'"'"'s cloud connector.