4Si RAID controller config - help

[suri_1]

We have a rp2470 with a A5856A 4Si RAID controller.
We also have a HP Surestore Disk System 2100 with 4 drives connected to channel 0 of the above controller.

Now we have a problem with Channel 0 and hence had to change 2100 to channel 2.

using irdiag -v /dev/iop0 I am able to see the 4 disks.

How can I restore back my volume group(vg02)+ data on these four disks which are in RAID5.

Any help is greatly appreciated.

Thanks
suri