Hot - Warm - Cool

Hot and Cold Data are a well-known classification from computer science and database technology.

SAP has rewritten these IT chapters with the introduction of BW/4.

Hot remains Hot. This is followed by Warm and then Cool.

It was not possible to find out at the presentation in California, USA, whether Cold also exists as a data classification in the SAP BW universe.

However, the existing SAP customer should assume that the fourth and weakest level still has its justification.

With BW/4, SAP wants to see its individual vision of a next-generation data warehouse realized that significantly reduces data movement and duplication by analyzing data in any storage location, whether in data lakes with the Hana Vora engine or in legacy systems inside (hot - warm - cool) or outside the enterprise (cold).

SAP Vora leverages and extends the Apache Spark data processing framework to enable rich, interactive analytics in Hadoop.

Combined with a sophisticated temperature management and compression process for hot, warm and cool data, BW/4 aims to enable efficient data preparation that should quickly lead to better results at much lower storage costs.