For best performance, your Netmon server should have the following minimum performance specifications:

Pentium 4 processor or equivalent
1024 MB RAM
40 GB Hard Disk (SATA recommended)
10/100 NIC (Gigabit NIC recommended)
56k Modem (for paging support)

Some features require SNMP-capable equipment. Network sniffing/protocol analysis requires network switches than can provide port monitoring (also known as SPAN) capabilities. Also, be aware that Netmon SE will not automatically install on hard disks significantly smaller than the minimum requirement, although a manual install may be possible. Keep in mind that with less than 40 GB of storage, your Netmon device will be extremely limited in terms of its ability to keep historical data for any length of time.