Recent owner of a Dell PowerVault MD3600i i'm experiencing some weird results.

I have a dedicated 24x 10GbE Switch (PowerConnect 8024), setup to jumbo frames 9K.

The MD3600 has 2 RAID controllers, each has 2x 10GbE ethernet nics. There's nothing else on the switch; one VLAN for SAN traffic.

Here's my multipath.conf

defaults {
    udev_dir        /dev
    polling_interval    5
    selector        "round-robin 0"
    path_grouping_policy    multibus
    getuid_callout      "/sbin/scsi_id -g -u -s /block/%n"
    prio_callout        none
    path_checker        readsector0
    rr_min_io       100
    max_fds         8192
    rr_weight       priorities
    failback        immediate
    no_path_retry       fail
    user_friendly_names yes
#   prio            rdac
}
blacklist {
    device {
               vendor "*"
        product "Universal Xport"
        }
#   devnode "^sd[a-z]"
}

devices {
    device {
           vendor "DELL"
           product "MD36xxi"
           path_grouping_policy group_by_prio
           prio rdac 
        #  polling_interval  5
           path_checker rdac
           path_selector "round-robin 0"
           hardware_handler "1 rdac"
           failback immediate
           features "2 pg_init_retries 50"
           no_path_retry 30
           rr_min_io 100
           prio_callout "/sbin/mpath_prio_rdac /dev/%n"
       }
}

And iscsid.conf :

node.startup = automatic
node.session.timeo.replacement_timeout = 15
node.conn[0].timeo.login_timeout = 15
node.conn[0].timeo.logout_timeout = 15
node.conn[0].timeo.noop_out_interval = 5
node.conn[0].timeo.noop_out_timeout = 10
node.session.iscsi.InitialR2T = No
node.session.iscsi.ImmediateData = Yes
node.session.iscsi.FirstBurstLength = 262144
node.session.iscsi.MaxBurstLength = 16776192
node.conn[0].iscsi.MaxRecvDataSegmentLength = 262144

After my tests; i can barely come to 200 Mb/s read/write.

Should I expect more than that ? Providing it has dual 10 GbE my thoughts where to come around the 400 Mb/s.

Any ideas ? Guidelines ? Troubleshooting tips ?