Finally I got my going04 machine fire up with Hardware RAID controller 
dmesg:
twed0: <unit 0, TwinStor, Normal> on twe0
twed0: 238474MB (488395120 sectors)</unit>
twed0: 238474MB (488395120 sectors)</unit>
for MEMO:
>sudo newfs -i 32768 /dev/twed0a
/dev/twed0a: 238474.2MB (488395104 sectors) block size 16384, fragment size 2048
using 1121 cylinder groups of 212.77MB, 13617 blks, 6848 inodes.
super-block backups (for fsck -b #) at:
160, 435904, 871648, 1307392, 1743136,……, 487597696, 488033440
previous using gvinum (w/o -i 32k):
/dev/mirror/gm0s1: 238472.7MB (488392000 sectors) block size 16384, fragment size 2048 using 1298 cylinder groups of 183.77MB, 11761 blks, 23552 inodes.
gvinum (w/ -i 32k)
dev/mirror/gm0s1: 238472.7MB (488392000 sectors) block size 16384, fragment size 2048 using 1121 cylinder groups of 212.77MB, 13617 blks, 6848 inodes.