Move qmail and directories to new system - how...?

[Anthony White]

I have a quick question about moving a complete working
qmail setup to a new disk drive.

My server has outgrown itself and now needs to be put on
larger drives.

Are there any problem moving ./Maildir/ directories
in the users home dirs to a new drive?

Are there any issues moving qmail itself?

I plan to move from my RedHat system from
2 2.1G drives to 2 9.1G drives that will
be running in RAID 1 configuration.

Anthony