Why my SATA Disks are not visible in BIOS on Intel® Server Board S2600ST?

Trying to create RAID( Redundant Array of Independent/Inexpensive Disks) using 8 SATA (Serial  Advanced Technology Attachment) disks directly on board, the disks are not visible in BIOS (basic input/output system) neither in AHCI (Advance Host Controller Interface) mode neither RAID mode, it seems that SATA Controller is disabled.

In order to solve the issue please follow the steps bellow:

1. Disconnect all the mini SAS cables from board.
2. Make sure that CHENBRO* 80H10323606A2 backplane is disconnected.
3. Update the Firmware Package 

Motherboard: Intel® Server Board S2600STCPU:  Intel® Xeon® Silver 4110 Processor (x2)Disks: 

SSD (Solid State Drive) Samsung *SM863 960GB  (X2) -> validated by IntelHDD (Hard Drive Disk) HUS726040ALE610*  4TB  (x6) -> validated by Intel

Chassis: Chenbro* RM23608BIOS version 0015 the latest.Backplane: CHENBRO* 80H10323606A2 Tried mini SAS (Serial Attached SCSI) cables :
    Adaptec/Microsemi* 2279800-RSA-F43S7PS-1M-N2*Intel H66178-002  (Including connecting SGPIO cable - Serial General Purpose Input/Output)Startech*  SAS43SAT1M