Win2k3 cannot see MSA20 logical drive

[Jasyn]

SYSTEM:
HP DL380 G5, Windows 2003 R2 SP2,
ACU 8.0.14
direct attached MSA20 (12x 500GB SATA) via smart array 6400 controller
1 array with 2 logical drives (LD).
LD 1 ~1.9TB RAID6
LD 2 ~1.9TB RAID6

LD1 has been up and running for a while. Recently added 6x 500GB drives and created LD2. BUT Windows cannot see LD2. I've restarted both, server & msa numerous times, refresh, rescanned. LD2 simply does not show up in Windows Disk Management.

But clearly shows in ACU. but SA 6400 controller in device manager only shows 1 logical drive as well.

???

Any help/suggestions would be appreciated.