Disk upgrade

We have NSBS6 SP5 with a pair of mirrored SCSI drives.
We are running out of disk space and need to upgrade the disks.

The existing disk is set up as a single NSS partition and single pool
with a number of volumes.

I am able to successfully clone the DOS and NSS partitions of both disks
onto a pair of new larger disks to replicate the existing mirror set.
This leaves the rest of the disk space of the new disks as unpartitioned
space.

I am trying to partition this extra space into a second netware
partition and expand the pool on it. Can I do this ?

I think first I have to break the mirror set which I don't seem to be
able to do with out deleting all the volumes. I have tried NSSMU without
luck. Any help here please ?

Thanks
Joe