carried over from the days when RAM was

expensive. Today they're obsolete and even

counterproductive. For example, in My

Computer/Properties/Performance/File System, the

Typical role is usually Desktop Computer. But if your

PC has more than 32MB of RAM, it'll operate

slightly faster if you select Network Server even if it

isn't really a server. (The Network Server setting

uses a little more RAM for various disk buffers and

caches to speed disk operations.) For most systems

with abundant RAM, it makes sense to use the server