Proliant DL380-G4 with the onboard SmartArray 6i controller.
Raid 1+0 set consisting of 2x 72 G and 2x 300 G disks (the bigger disks got added later).
Effective capacity about 140 GB and, of course, it is full.
I can't add more disks because the remaining 2 slots are taken by another 2-disk mirror. I can replace the 72 G disks (1 at a time) by 300 G disks and (after rebuilds) grow the array. No redundancy during the disk-swap though. And that 2x :-(
Or I change the array from Raid 1+0 to Raid 5 which will just give me 70 G extra (which is sufficient), but keeps (hopefully) the redundancy intact during the change.
Backup, kill the array, replace the small disks, create new array, then restore is not an option as I need to keep this box online at all times.
I'm not worried about the performance-loss during a rebuild. (User-access to the data is luckily enough quite light in this case.)
I'm looking for recommendations how to get the disk-space quickly upgraded, if possible while maintaining redundancy.
Edit: Changed server-type into G4 (I've got both in the server-room and got them mixed up.)