[Grml] how to recognize each RAID member separately

Hello I tried to make a backup of a HP DL380 G5 (W28K) with a HP Smart Array P400 controller with 4 RAID-members (4 75GB SAS drives) The Linux Live DVD's and Acronis TrueImage i' am unsing, do show that 4 disks as a singe LUN :-(

To my knowledge such "Single-LUN backups" can make problem if they should be restored if a harddisk is changed before...

Therefore i would feel much more comfortable, if from each harddirve could be made a separate DD-image. Question: Is there a way to have GRML seen that 4 disks as separate disks (and NOT as a single LUN)? Thank you very much for every feedback!

Joe