[Samba] partitions

[oeh univie edv lists]

I'd like to set up a Samba DC, an additional DC and a Samba file server.
Everything is configured with RAID 1. I encrypt all partitions except
partition /boot (which is also on RAID).

What partitions, partition sizes, file system types do you use on your
Samba DC, additional DC and file server? Is there something like "best
practice"?  

kind regards, 
birgit