Can I use a compressed filesystem?
(From Kurt Jaeger): On AIX 4.1.x, use compressed filesystems with 512 bytes per fragment and 2048 bytes per inode. This is the best space optimazation I could find up to now. News is I/O bound, so doing some more compression to save on head seeks and reads will better balance your system. I currently have a 100/60% yield: If the disk would be 100% full, 60% of the inodes would be used.