redundant IO server consuming too much RAM

Hi,

We are using Citect SCADA with redundancy and multiple web clients. During monitoring, I observe that the Primary IO server keeps consuming RAM and eventually it restarts/stops.  It generally takes 15-20 days to consume 2GB RAM.

I have also observed that sometimes even though the IO devices are connected to the primary IO server, The standby IO server is consuming too much RAM (2 GB in 4 Hours).

Any idea or suggestion ?

Regards,

Chanakya Patel