I searched but found no solution to this question.
I have a HP ProLiant DL385-G5p server with RAID 5, having 4 hard drives: 3*75GB + 1*75GB spare. One of the 3 hard disks in RAID5 has failed (the indicator shows this), and the spare is up an running.
My question is: can I replace the failed drive with a 150GB hard disk, by unplugging the failed drive while the system is running, and hotplugging the bigger 150GB hard disk? Is there any risk of system failure? My guess is that the array controller should rebuild automatically, but one never knows.