Architectural Overview; 3Gbit Sas Port Expanders - Intel S7000FC4UR Technical Product Specification

Intel® Server System S7000FC4UR TPS
7.2

Architectural Overview

The SAS backplane provides several main functions for the system.
7.2.1

3Gbit SAS Port Expanders

3Gbit SAS port expanders provide high-speed serial data paths. The paths are from the eight
attached SAS hard drives to the server board.
7.2.1.1 SAS Data
SAS data between drives and server board are routed across two 4-port internal SAS cables.
The SAS cables connect the SAS backplane to the PCI-Express* SAS Redundant Array of
Independent Disks (RAID) controller card. In addition, the SAS controller card is plugged into
the server board at one of the PCI-Express* slots.
7.2.1.2 SAS Controller
The eight drives are connected directly to the SAS controller. The SAS controller is used to
control SAS traffic flow between drives and the SAS RAID controller card. A Vitesse* VSC410
module communicates the presence and fault signals via a SES-2 interface (I
Serial General Purpose Input/Output (SGPIO) interface thru the SAS cables.
7.2.1.3 Enclosure Management
The enclosure management is comprised of the following:
SAS enclosure management per SES-2 or via SGPIO interface
Fault and presence Light Emitting Diode (LED) control logic
7.2.1.4 Server Management I
The server management I
Fan presence sensing and fan fault LED control
2
I C* serial EEPROM Field Replaceable Unit (FRU)
Temperature sensor
Expander controller firmware update capability
7.2.1.5 Voltage Regulators
The voltage regulators are as follows:
12VDC to 5VDC
5VDC to 3.3VDC
Revision 1.0
C* Interface
2
2
C* Interface is comprised of the following:
SAS Backplane
2
C* cable) or via a
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