49016e78_rver_Features___Hack_Mine_Wiki__Description
[Property] growthFactor [Default Value] 2.0 [Description] 
The relative amount to increase or decrease the cache's resources by when a "grow" or "shrink" occurs. E.g. 2.0 would double the existing cache size with each growth and halve it with each shrink.
Server Features - Hack/Mine Wiki
Description