This issue only happens on LSI 3008 in IR mode, and does not affect RAID1 or IT mode.


LSI is aware of this issue and is working on a long term solution. For short term solution, a Windows registry tweak is required.


(1) Open Registry to the following (this assume the LSI_SAS3 driver)
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Lsi_sas3\Parameters\Device


(2) On the right side is the DriverParameter string, and it should have “PlaceHolder=0;” or similar entry


(3) Double-click on the DriverParameter name to edit it.


(4) Add MaxSGList=65;


(5) If there are multiple entries in the DriverParameter string, each should be separated by a semicolon, and the last one MUST be terminated with a semicolon


(6) Reboot the system


(7) Re-run performance testing