LVM is the only way I know of to add (or remove) space to a file system without taking the system offline. RAID gives you fault tolerance. They are complementary systems. Pat -- Patrick Ouellette pouelle@buckeye-express.com Amateur Radio: KB8PYM 50.200, 144.200 EN81fp ICBM: 41:38:25.476N 83:31:43.417W