Nick, you will need to request a bin change to do this.  Your CE can help with this.  In general you will need to identify the drives that will provide the optimal position in the array for the hostspare locations, then identify the hypers that reside on these physical drives.   These hypers will have to be migrated to other volumes, either by optimizer or deleted via symconfigure once the data is migrated to new hypers.  Once this is complete then CE can do a bin change converting to hotspares. Your CE will be able to better advise if this is possible
Hello Everyone,  Let me explain my environment in detail.  We have very old DMX8000 in our environment.  It has 384 disks and only there is 1 disk group. All 384 disks are added to this disk group.  It does NOT have any extra host spares disk.  Now, out of these 384 data disk, I would like to remove 5 data disks  and make it as hotspares disk so incase of any disks failure occur, hotspares disk can recover data.  Is it possible ?? If yes, what kind of steps involved ??  Please let me know your thoughts.  Thanks
How to remove data disk from diskgroup and make it as hotspare in DMX8000 ?