I know where. Many such datasets exist in SRA, dbGAP and the TCGA Data portal. The problem is that many of the best datasets for CNV analysis (e.g., human tumors) will be limited access and I find all three of these resources very painful to search. I'm hoping someone else with some success in this matter will answer your question.

Hi Arun

I'm trying SCNVSim. If you found another tool, please let me know.

Thanks

Leandro