We have been able to add an additional hard drive to the RAID array using Dell Open Manage, but Windows recognizes the drive as being unallocated. Therefore, we are unable to save anything to this drive. We do not want to add the drive as its own logical drive, we would prefer to expand the capacity of the D: with this drive. I think we may need to first format the partition, but we are not sure. What steps need to be taken in order for us to accomplish these goals? Also our C: drive seems to be running low on space, are there any additional files that may be removed to free up some space; i.e windows update uninstall files. Any help would be greatly appreciated. Thanks a bunch.