My ADC server had a hardware failure (RAID controller died). Since it is an old hardware anyway, I decided to not repair it but install a completely new ADC on a virtual machine (Citrix Xenserver).
My currently working PDC is running OES2SP1, as was the now-decommissioned ADC. Would it be reasonable to install the new ADC with OES2SP2 or is it better to keep PDC and ADC on the same SP level?

And another question - is it OK to install the new server with the same IP address as the old server? I already removed the failed server from the eDirectory tree.

I know SP1 is out of date, and I promise I'll update As Soon As I Find Some Time(tm).