New server dualXeon with 4G memory with NW65SP5
Server up time - 2 days.

In the NRM i see: Yellow:
Available Logical Space current=257MB Peak=256MB * Max=4,096MB
In the Monitor i see:
Original cache buffers: 915 346
Total cache buffers: 409 207

It badly or well or normally?

There can be a server it is required to adjust in addition or better to not
disturb a server?