SCALE UP [SAP HANA]
Build a single system with as many resources as possible.
SCALE OUT [SAP HANA]
Scale-out systems connect a cluster of smaller SAP HANA systems together into one clustered database
SHOULD YOU SCALE UP OR SCALE OUT ?
SAP recommends to scale-up first before considering scale-out. With scale-up, you don’t have any of the expense of GPFS or a SAN, and none of the complexity of managing a cluster.
An 8-socket 6TB system will fit 95% of SAP customers.
If you don’t need more than 2TB in the short-mid term, then don’t buy scale-out. Instead, buy a scale-up system that will meet your requirements today