For the error reported in the initial thread you can refer to the following article for troubleshooting steps for the error reported.
Cisco MDS Switches: Unable to bring port online due to exceeded Bit-Error threshold.
If you use primus reference emc230645.
Also note even after SFP are replaced on some occasion's the interface still needs to be reset to get it online.
Taking the interface fc1/1 as an example, you can use the following commands to reset the interface.
interface fc 1/1
do clear counters interface fc 1/1
If the above steps didn't help you can use the troubleshooting steps in another article to help source the cause of the issue. I.e if you wanted to determine if its a problem with the cable/ SFP/ the physical portbalde or attached device itself..
Its matching primus number is emc132384.