Broadcom Controller and LSI expander - Databolt not working (solved)

Discussion in 'RAID Controllers and Host Bus Adapters' started by blublub, Sep 30, 2019.

  1. blublub

    blublub New Member

    Joined:
    Dec 17, 2017
    Messages:
    26
    Likes Received:
    1
    Hi

    I use a 9460-8i RAID controller. It is connected to a Chenbro SAS Expander with LSI 3x 36 chipset
    via 1 MinSAS connector available on the controller.
    In Broadcom LSA the connection status says that is connected to the backplane with 4 channels.
    I am using 9 SATA SSDs in a RAID 5 and the RAID this should give me about 4GB/s seq. read.

    Benchmarks show a 1,9GB/s read which pretty much equals the 4 SAS channels running at 6gb/s - with Databolt I should get about a 50% uplift, so at least 3GB/s - any idea why that isn't working? According the datasheets both controller and expander should be supporting it.

    Does anyone have an idea why this isn't working??


    PS: I know I can connect a 2nd MiniSAS cable, its about future expansion and maxing out the PCIe x8 slot - so. 2 RAIDs a 9 SSDs via 2 MiniSAS connectors
     
    #1
    Last edited: Sep 30, 2019
  2. i386

    i386 Well-Known Member

    Joined:
    Mar 18, 2016
    Messages:
    1,664
    Likes Received:
    400
    Chenbro Expander? That's sas Gen 2.
    You need sas3 for databolt
     
    #2
  3. blublub

    blublub New Member

    Joined:
    Dec 17, 2017
    Messages:
    26
    Likes Received:
    1
    It's a Gen3 12gbs. LSI 3x 36 expander chip with databolt.
     
    #3
  4. blublub

    blublub New Member

    Joined:
    Dec 17, 2017
    Messages:
    26
    Likes Received:
    1
    Solved:
    Databolt was disabled by Chenbro in the LSI expander FW.
     
    #4
Similar Threads: Broadcom Controller
Forum Title Date
RAID Controllers and Host Bus Adapters Broadcom (LSI/Avago) HBA and RAID Controller Technical Discussion Apr 6, 2019
RAID Controllers and Host Bus Adapters poor nvme performance on broadcom 9440-8i / lenovo 530-8i? Feb 15, 2019
RAID Controllers and Host Bus Adapters A way to use 0YW3J6 (Broadcom/LSI 9440-8i) RAID card in R720? Jan 6, 2019
RAID Controllers and Host Bus Adapters Lenovo 930-8i to Broadcom SAS 9460-8i SAS3508 Nov 4, 2018
RAID Controllers and Host Bus Adapters LSI SAS 9211-8i / BROADCOM SAS 9211-8i May 16, 2018

Share This Page