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Use case 7 outlines the steps that are required to create SnapVX cascaded snapshots of the SAP HANA persistent (R2) devices at the remote site for repurposing.
Cascading snapshots is the process of taking a snapshot of a linked target and linking a target or multiple targets to a snapshot of a linked target. The benefit of using cascaded snapshots is evident when some data scrambling is necessary for nonproduction environments. Data scrambling can be performed on the initial linked target from production. A cascaded snapshot can then be used to provide the latest data to development and test teams with a smaller footprint and protect sensitive data in test and training systems. For example a cascaded snapshot can be used in scenarios where solutions such as SAP Test Data Migration Server (TDMS) are used to create lean and secure nonproduction environments.
The following figure illustrates the R1 devices in the source PowerMax system being replicated to the R2 devices in the target PowerMax system. A snapshot of the R2 devices is taken on the remote side and then linked to a target where any data scrambling can be processed. A snapshot is taken of this linked target, which can then be linked to one or multiple linked target devices.
Note: Although this use case shows operations occurring at the remote site, these operations could also have occurred at the local site.