> I got 4x120GB IDE Harddisk that i want to put on RAID (linear mode)

What do you want a .5Tb virtual disk for?
Taking a backup of it will be a nightmare, and as raid0 you would
have to restore all of it when a single disk fails.

There are also some problems with the ffs file system structure
as it doesn't scale to such very large filesystems unless you
increase the 'block' size from 8k.  This isn't an issue if
you want to store large files, but is problematical for a
source archive.

(Actually does a raid0 volume let you safely lie about the
disk geometry?  So letting you increase the number of blocks
per cylinder and alleviating one of the fffs limits.)

	David

-- 
David Laight: david@l8s.co.uk