Hi Jamy69,
You can find the link below to the ITMS 7.1 Planning Guide which includes Hardware Requirements for ITMS in general. With specific to Monitor Solution i would recommend a few things for 3000 Servers. The Basic Monitor Packs are the best choice in this instance, i would also recommend maybe decreasing the polling interval time. For Monitor you need to consider the following:
- Frequency in Metrics being Collected
- Number of Metric being Collected
- Configuration of Data being collected (Process and NT Events)
- How long you want/require to keep the data in the CMDB
http://www.symantec.com/docs/DOC3464
These are just a few things that you need to identify.
Kind Regards,