IP Library › Granted Patent US 12693939
Granted Patent B2
US 12693939 · App. 18/670,704 · Granted Jul 28, 2026

System and method for cloning as SQL server AG databases in a hyperconverged system

Inventors: Tarun Mehta (Bangalore, IN); Rohan Mohan Rayaraddi (Bangalore, IN)
Assignee: Nutanix, Inc.
G06F11/1464G06F3/0608G06F3/065G06F3/067G06F16/273G06F16/275G06F2201/80
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Quick Facts
Patent No.
US 12693939
App. No.
18/670,704
Granted
Jul 28, 2026
Kind
B2
Abstract

A system and method include creating, by an Availability Group (“AG”) controller in a virtual computing system, a first AG clone from a source database. The source database is stored on a primary replica node of an AG of the virtual computing system. The system and method also include creating, by the Controller, a second AG clone from the first AG clone and storing, by the Controller, the second AG clone on a secondary replica node of the AG. The second AG clone has a size of substantially zero.

Claims (33)

1 . A method comprising:

capturing, by a processor executing computer-readable instructions stored on a memory, a first snapshot of a source database on a first node;

capturing, by the processor, one or more transactional logs of one or more changes in the source database;

creating, by the processor, a point-in-time clone from the first snapshot and the one or more transactional logs; and

capturing, by the processor, a second snapshot of the point-in-time clone and, using the second snapshot, creating a second clone on a second node.

2 . The method of claim 1 , wherein creating the point-in-time clone includes applying, by the processor, the one or more transactional logs to the first snapshot.

3 . The method of claim 1 , further comprising:

storing, by the processor, the point-in-time clone on the first node.

4 . The method of claim 3 , wherein the first node is located in a first location and the second node is located in a second location different from the first location.

5 . The method of claim 3 , further comprising storing, by the processor, one or more copies of the second clone on additional nodes.

6 . The method of claim 1 , further comprising capturing, by the processor, the first snapshot at a first predetermined time and capturing the second snapshot at a second predetermined time according to a protection schedule associated with the source database.

7 . The method of claim 1 , wherein the point-in-time clone and the second clone reflect a state of the source database when the first snapshot was captured.

8 . The method of claim 1 , wherein a size of the first clone is greater than the size of the second clone.

9 . The method of claim 1 , wherein the point-in-time clone includes pointers to data of the source database, and wherein the second clone includes pointers to data of the point-in-time clone.

10 . The method of claim 1 , further comprising:

storing, by the processor, the first clone and one or more copies of the first clone on the first node based on a first replication factor; and

storing, by the processor, the second clone and one or more copies of the second clone on the second node based on a second replication factor.

11 . A system comprising one or more processors and a non-transitory, computer-readable medium including instructions which, when executed by the one or more processors, cause the one or more processors to:

capture a first snapshot of a source database on a first node;

capture one or more transactional logs of one or more changes in the source database;

create a point-in-time clone from the first snapshot and the one or more transactional logs; and

capture a second snapshot of the point-in-time clone and, using the second snapshot, creating a second clone on a second node.

12 . The system of claim 11 , wherein the instructions cause the one or more processors to create the point-in-time clone by applying the one or more transactional logs to the first snapshot.

13 . The system of claim 11 , wherein the instructions cause the one or more processors to store the point-in-time clone on the first node.

14 . The system of claim 13 , wherein the first node is located in a first location and the second node is located in a second location different from the first location.

15 . The system of claim 13 , wherein the instructions cause the one or more processors to store one or more copies of the second clone on additional nodes.

16 . The system of claim 11 , wherein the instructions cause the one or more processor to capture the first snapshot at a first predetermined time and capture the second snapshot at a second predetermined time according to a protection schedule associated with the source database.

17 . The system of claim 11 , wherein the point-in-time clone and the second clone reflect a state of the source database when the first snapshot was captured.

18 . The system of claim 11 , wherein a size of the first clone is greater than the size of the second clone.

19 . The system of claim 11 , wherein the point-in-time clone includes pointers to data of the source database, and wherein the second clone includes pointers to data of the point-in-time clone.

20 . The system of claim 11 , wherein the instructions cause the one or more processor to:

store the first clone and one or more copies of the first clone on the first node based on a first replication factor; and

store the second clone and one or more copies of the second clone on the second node based on a second replication factor.