[SunHELP] Ultra5/10 hardware question

[Shahid Shahzad-W5106C]

Hi,
 
What is the maximum size disk that can be added in Ultra 5/10 system using Solaris 2.6 or Solaris 8? I want to add 30GB or 50GB or 100GB (if available) Maxtor or Western Digital 7200RPM in ultra5/10. Can any ide disk be used in ultra5/10 or it has to be a SUN disk? Do I need to install any special patches or drivers?
Any info will be appreciated.
 
Thanks,
Shahzad