I have a windows storage server 2012 box connected with a 10gb connection. After a restart transfer speed is great(700+ MB/s) but after a few hours the transfer speeds are horrible(300~ KB/s).
This is a low use server so I didn't even know this was going on until recently. Looking at the network performance there is nothing using the network during the slow transfers.
This seems to be affecting only smb transfers as internet traffic seems fine as far as I can tell.
We have a glogic(formerly broadcom) Netextreme II card 2x 10gb 2x 1gb built in. I was initially using a single 10gb connection using a media converter. I removed the media converter thinking that was some how messed up, And for a while was using all four nics in a LACP configuration but the problem persisted.
I installed a fiber network card from sonnet tech thinking maybe the network card was messed up but the problem is still persisting.
I am wondering if anyone has run into something like this. Or know of a solution to maybe fix it?
I am not virtualizing anything on the server and SMB packet signing is turned off.