Environment:
NetBSD running on i386 with Adaptec 7890 SCSI controller and Chaparral K5412
hardware RAID controller.

Problem Description:
I'm attempting to backup a 4 drive RAID 5 array that was built on the K5412. 
The drive is mounted as /dev/sd0g.  Each time I've attempted to perform a dump
to a Quantum DLT7000, I've received the error message:

DUMP: bad sblock magic number

Does anyone know how I can perform a dump of the RAID partition?  Does anyone
have experience with hardware RAID partitions?  I've searched using the
parameters "hardware RAID dump", but I couldn't find anything useful (besides
an e-mail post by Chris Jones about using a CMD external RAID controller).

tar works fine, but the indexing features of dump is much more preferred.

Thanks,

Andrew