Thanks for the answers, I contacted support and make the following changes:

maxRecvDataSegmentLen=262144
MaxBurstLength=16776192
Maxxmitdatasegment=262144
FirstBurstLength=65536
DataDigest=None
maxoutstandingr2t=8
InitialR2T=No
ImmediateData=Yes
headerDigest=None
Wthreads=8

and jumbo frames 9000 and my disk SEAGATE ST31000424SS 00069WK36GJR