[davelnewton]

It also depends on how the DB is used: read or write heavy? Is the data relational? How much? How do you need to query the data? Etc.

[laxentasken]

Updated with "The data is relational and as for now the size is ~400GB which I expect to grow around 3% each time. There wont be much reads as the tables will be exported for further process and the the writes will be in a controlled fashion as stated above."

Queries will only be done as spot checks to ensure correctness.