Hardware Requirement for SCOM 2007

Hello,

I have still SCOM 2007 R2.

I would like to know what is or are the requirements for the hardware:

Disk : I have 300 Gb 10 K will it be enough for the database server or 15 K is mandatory?

Thanks,
Dom

System Center Operations Manager 2007 / System Center Configuration Manager 2007 R2 / Forefront Client Security / Forefront Identity Manager