trouble with second raid set

[Gary <vex555@gmx.net>]

I have a software raid (mirror) set (raid0) working perfectly.
Using unused space on each drive I am trying to set up a second raidset
- also mirror. This will be mounted as /data and just used for storage /
backups.

After creating the raidset, disklabel and newfs on the next boot it says
Can't open /dev/rraid1a: Device not configured
CAN"T CHECK FILESYSTEM.
/dev/rraid1a: UNEXPECTED INCONSISTENCY; run fsck_ffs MANUALLY.

I am dumped into single user mode. The main raid set raid0 is fine. I've
done everything identically to when the main set was created except
allocated a different serial number.

I was wondering if some other settings need to be different such as the 
START array
1 2 0    # this is the same for both raid sets

START queue
fifo 100      # this is the same too


any clues please? Thx, Gary