US 11,953,999 B2
Technique for efficient data failover in a multi-site data replication environment
Ashish Kumar, Karnataka (IN); Freddy James, Maharastra (IN); Kai Tan, Cary, NC (US); and Pranab Patnaik, Cary, NC (US)
Assigned to Nutanix, Inc., San Jose, CA (US)
Filed by Nutanix, Inc., San Jose, CA (US)
Filed on Jul. 29, 2022, as Appl. No. 17/877,169.
Application 17/877,169 is a continuation of application No. 17/322,427, filed on May 17, 2021, granted, now 11,436,097.
Claims priority of application No. 202141014977 (IN), filed on Mar. 31, 2021.
Prior Publication US 2022/0374316 A1, Nov. 24, 2022
Int. Cl. G06F 11/00 (2006.01); G06F 3/06 (2006.01); G06F 11/14 (2006.01); G06F 11/20 (2006.01); G06F 16/182 (2019.01)
CPC G06F 11/1464 (2013.01) [G06F 3/0668 (2013.01); G06F 11/008 (2013.01); G06F 11/1469 (2013.01); G06F 11/2023 (2013.01); G06F 16/1824 (2019.01); G06F 2201/84 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A method comprising:
creating one or more protection rules (PR) to retain a number of common snapshots across nodes of a multi-site disaster recovery (DR) environment, the PR configured to satisfy a recovery point objective (RPO) that specifies an amount of tolerable data loss applied to failover data of a first site to second and third sites of the DR environment, wherein the number of common snapshots is calculated based on pair-wide replication from the first site to the second and third sites;
processing the PR at the first site to compute parameters including frequency of snapshot replication among the sites so as to retain a latest common snapshot of the common snapshots used as a recovery point; and
transmitting snapshot replication of the failover data from the first site to the second and third sites, respectively, to update the latest common snapshot.