Solaris Server getting hanged

Hi,

I have recently changed the port speed to 1000 Mbps, auto negotiation ON from 100 Mbps auto negotiation OFF. At a particular time in the night, various other nodes FTP few big file to this node. At that particular moment when the other node start FTPing, the server becomes slow and is kind of getting hanged.

Can anyone please explain the logic behind it?

What might be the corrective actions at my server end. Unfortunately, the timing of the FTP can not be changed.

Thanks a lot

Firstly, please post what hardware this is. (Is this Solaris SPARC or x86).

What is the network adapter make/model? Add-on or on-board?

Is there a BIOS upgrade available for this adapter?

Does the node FTP'ing in happen to be a Windoze system?