YES - Because SAP HANA is designed to manage data in-memory.
SAP HANA in-memory Platform maintains one data copy for both transactional and analytical workloads. All data is in a compressed, columnar format to maximize access speed and the amount of data managed in-memory. Using the dynamic tiering capability, rarely accessed data can also be maintained on disk-based, columnar tables. Access to this data remains fast because it can be moved to memory for processing without being reorganized. In this way, SAP HANA can manage databases of any size without being limited by the amount of available memory in a system.
Disk-Based Database with In-Memory Cache
NO - Because the solution is designed to manage data on disk.
Business innovation is limited by the speed of the disk
Disk-based databases are architected to manage data on disk and use caches and other data structures to accelerate data access. In this way the disk latency can be mitigated but not eliminated because the core engine has been optimized to manage data that reside on disk and cannot function if the data is not maintained in it. While analytical workloads on cached data can be processed without accessing the disk, transactional
workloads always require disk access.
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