Support was added for SORT_MEMORY to specify the maximum memory to use in a rebuild. The SORT_MEMORY keyword specifies a memory size in bytes and can use the MB and GB keywords (unlike MAX_K_TO_USE).
The maximum SORT_MEMORY value is:
As the SORT_MEMORY option is more intuitive, its use is recommended over MAX_K_TO_USE. (MAX_K_TO_USE remains available for backward compatibility). If both SORT_MEMORY and MAX_K_TO_USE are specified in ctsrvr.cfg, only the one that is specified last in the configuration file takes effect.