Asynchronous GLVM

Asynchronous Geographic Logical Volume Manager (GLVM) mirrors data across the primary and secondary sites over standard TCP/IP networks. Where the primary site can be your production site and the secondary site can be your disaster recovery site.

The following figure shows the asynchronous GLVM operations, where the GLVM environment contains two nodes, Node 1_1 and Node 2_1. These nodes are linked across Site 1 and Site 2 through the standard TCP/IP network.

The workloads that are running in Node 1_1 of the primary site (Site 1) writes data to the local disks (primary disks) that are in the primary site. These write operations are tracked by the Logical Volume Manager (LVM) and the workloads that are running in Node 2_1 of the secondary site (Site 2) writes data to the cache logical volume (cache) which is a buffer disk in the primary site. The asynchronous GLVM transports the data from the cache logical volume, to the remote site (Site 2) through the TCP/IP network and writes the data to the backup disks in the remote site. The workloads that are running in Node 2_1 of the remote site also writes data to the backup disks in the secondary site.