FreeNAS-9.10.2-U6 disconnect iSCSI Windows

[mi4man]

When copying a file to an iSCSI disk, the speed drops to 0, after about a minute the speed rises, and then again drops to 0, and so on until the whole file is downloaded.

FreeNAS-9.10.2-U6 version
Speed between FreeNAS and Windows 750Mb / s

Can you please tell me how to fix this problem?

 

[Artion]

Hi, how much space do you have in your pool? Was the zvol / iscsi targed a thin or thick provisioned?

 

[mi4man]

iSCSI disk space 150 Gb
I think thick provisioned, but where can I watch it?