f73f5600__PDW__and_ROLAP___ORAYLIS_Blog__ly_available_to_the_end_users_
[LOW LATENCY] SUPPORTS VERY LARGE FACT TABLES
MOLAP cube sizes of 4 or 5 TB are possible and due to the compression in the cube storage, this corresponds to fact table sizes of 50 TB and more. However, if you go beyond, there is a point where only ROLAP cubes can solve the amount of data.
Parallel Data Warehouse (PDW) and ROLAP « ORAYLIS Blog
No need to process MOLAP partitions: low latency (data in the relational data warehouse tables are immediately available to the end users)