Growing a RAID 5: Proware sb 2803

I have an old Proware sb-2803 RAID (8 IDE drives with SCSI controller connected to an old SGI box) It was setup with 8 200GB drives 7 in the RAID 5 and 1 in a spare pool. A couple of drives failed and the decision was made to replace all of the drives with 320GB drives. That procedure went fine but now I am trying to figure out how to grow the RAID to use the extra 120GB in each drive. The manuals are fairly weak and the support is nearly nonexistent. Any advice would be helpful or possibly references to another site where I can find the information I need.

Many Thanks
Paul

Sorry for the lack of info Rozar, I was trying to keep it simple.

I changed nothing but the drives. Yes the new drives are ATA. I simply pulled the 200's one at a time and put a 320 in its place allowing the RAID to rebuild itself each time.

Since I followed the procedure above the RAID still "thinks" it has 200GB drives and thus will only use 200GB of the 320GB drives. I do not think I have a 2TB limit. As for the OS whatever flavor of Unix 5 year old SGI machines were using. But this is not an OS issue, the hardware RAID itself has a display on the front and tells me how space it has.

I thought the official name for what I want to do is "grow". At least that is what I have found in my research.

I cannot put my hands on this box so it is difficult to just play with until I figure it out.

Thanks
Paul

Thanks a lot. It is better than not knowing. It appears as though the new unix/linux distributions have a tool for doing this but it sounds like the hardware RAIDs do not.

Regards
Paul

had same problem adding bigger hdd's to 4500r ibm server
in a raid5 , new hdd was still old size as raid originally built

the solution was to use partition magic to make the drivers bigger
using up the extra partition space

it did not care about the raid , since it did not see , it just saw the parttition created by the raid controller ,
hope this helps
richard