SDS 4.2.1: Soft Partitions - Max devices

List:

If there is supposedly support for "thousands" of partitions with SDS 4.2.1,
how come /dev/md entries are from d0 - d99 only? Is there a system tunable
that would increase this number ie. so that I can have standards like 100's
would be the 1st submirrors, 200's be the 2nd submirrors and 300's be the
mirrors?

Thanks.