Is SAP HANA Enterprise Ready?
Yes. From its inception, HANA was intended to be a mission-critical database.
SAP HANA always stores a copy of data on disk for persistence, so if the power goes out, it will load data back into memory when power is restored (generally on-demand, but this is configurable). It stores logs so a very low Recovery Point Objective is possible.
HANA also has inbuilt capabilities to replicate the data to standby systems, so in a cluster, you can have High Availability and in any configuration you can have a cluster for Disaster Recovery and Fault Tolerance for business continuity. Disaster Recovery can be configured at the storage-level (depending on vendor) and also at the database level, which is called system replication.
It’s worth noting that most customers implement either HA or DR for HANA. It is exceptionally easy to setup (DR takes just a few clicks) and most customers that invest in HANA find business continuity is important to them.
SAP HANA also has interfaces for 3rd party backup and monitoring, like TSM or NetBackup. Solution Manager and SAP Landscape Virtualization Management are supported if you’re an SAP shop.