Recovering from a crash consistent snapshot is not the same as recovering from an application consistent snapshot. There are a number of scenarios to consider:
- Recovering a crash consistent storage snapshot (both data and log) to the same system it was taken from should typically work, where the instance and any tenants will be available after starting up.
- Recovering a crash consistent storage snapshot to a system with a different name or instance SID is possible but SAP HANA needs to be installed beforehand, and any log and data volumes detached before attaching the recovered volumes.
- (Scale Out only) the source and target topology - the number of worker and standby nodes - must match.
- If the original volumes are overwritten with the storage snapshot they must first be unmounted from the operating system.
- (Scale Out only) If the snapshots are restored to new volumes then the global.ini configuration files storage section needs to be updated with the new World Wide Identifiers (WWID's).