Are my applications accelerated without manual intervention and tuning with SAP HANA?
SAP HANA Platform vs. Disk-Based Database with In-Memory Cache
YES - SAP HANA stores data in memory first.
Disk-Based Database with In-Memory Cache
NO - All data is on the disk by default.
Disk-based databases are architected to manage data on disk and use add-on in-memory caches to selectively accelerate access to portions of data. To accelerate applications, DBAs identify what data to accelerate and ensure it is duplicated in the appropriate in-memory cache. Additionally they maintain indexes and other data structures to ensure that performance of both transactional and analytical workloads is acceptable. The task is
daunting since it is often challenging to predict what data needs acceleration and to ensure mixed workload performance, which leads to extensive testing and tuning.
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