scisvr retention period

Hi, the scisvr.log file gets renamed to scisvr.log.001 when it reaches about 10Mb and a new file scisvr.log is created.
Is it possible to set PP to keep more than just the last 10Mb, e.g by having a .002, .003 etc upto say .010?  Or change the size at which it will start a  new log to a larger value like 100Mb

Thanks

Joe