On my box running Ubuntu Server 11.10 I have a rather slow soft RAID6 array on four USB sticks (and no other means for persistent storage).
I want a faster filesystem on that box.
I'm OK if I'd lose some data in emergency situation, but I'd prefer the system and files to stay in consistent state in case of data loss.
I can set up a RAM-drive, but is there some more robust solution? (Like, maybe, configure my ext4 to use more RAM and sync less often... if that is a good idea.)
Update: Please assume that the 4xUSB sticks, RAID6 and ext4 are constants as far as this question is concerned. I can tune RAID6 and ext4 settings, I can set up something on top of that (or on a side — like RAM-drive), but no lower-level changes.