Controlling the Data size for the tpcc about h-store HOT 1 CLOSED

so to control the data size, I should use the scaling factor parameter....

You can control either the number of warehouses in TPC-C:

https://github.com/apavlo/h-store/blob/master/properties/benchmarks/tpcc.properties#L15

Or you can set the scale factor. The scale factor will change the # of customers and initial orders:

https://github.com/apavlo/h-store/blob/master/src/benchmarks/org/voltdb/benchmark/tpcc/ScaleParameters.java#L91

lastly .... If I use configurations like the following [the default configurations]
2 sites
2 partitions per sites......
does this mean that the data will be replicated 4 times?

No, this means that the database will be split up into four distinct partitions. You can use the catalog-info command line tool to see what your cluster looks like:

http://hstore.cs.brown.edu/documentation/configuration/cluster-file/

from h-store.