Add a new disk to data directory

Hi all,


I need to add a new disk to the data directory of postrgreSql ( the
one i ve got is running out of space), how can i do that?, i have
postgreSql 8.0.3 on a Mandrake Linux 10.1 machine (hp proliant ml350
g3)

Do I have to use LVM (Logical Volume Manager)?
Is there any workaround in postgreSQL?

I will apreciate any help you people could give me.

All yours
Ing.Jose A Fuenmayor Nava.