more than one fs type on the same file system

UNIX HP-UX
1

hi
is it possible to have more than one file system types on the same file system.
if yes then how do we do it,
can veritas be used to achieve this

2

I think that you mean if we can have more than one filesystem in one logical volume. If that is your question, then the answer is no.
Each logical volume can have only one filesystem on it. A filesystem need not completely fill a logical volume, but you still cannot have another filesystem in the remaining space on that volume.