Assume you have two disks with /vz on disk1 and /vz2 on disk2 - is it best to leave the root directories on disk1, or can they be on disk2 without adding unnecessary disk usage?

For example:
VE100: /vz/root/100 /vz/private/100
VE101: /vz2/root/101 /vz2/private/101

or is it better to have it like

VE100: /vz/root/100 /vz/private/100
VE101: /vz/root/101 /vz2/private/101

I'm concerned that having the root directory on the second disk may force Virtuozzo to duplicate the template data to the second disk. Is this the case?