Intel® Server System S7000FC4UR TPS SAS Backplane
Revision 1.0
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7.3.4 SAS Controller
The SAS controller consists of eight identical SAS ports, two of which are connected to the
Molex* SFF 8086 mini connector. The mini connector routes the data to/from the SAS controller
card. All eight ports are used to connect directly to the eight hot-pluggable SAS (or SATA)
drives with each drive having a dedicated port. All ports are used.
All SAS channels on the SAS backplane are capable of 3Gbps data transmission on either the
transmition path or the reception path. During system power-on and hot drive insertion, SAS
rates are negotiated to operate at either 1.5Gbps for SATA mode or 3.0Gbps for SAS mode.
7.3.5 Vitesse* VSC410 Controller Functionality
The Vitesse* VSC410 is a storage management controller with SCSI Accessed Fault-Tolerant
Enclosure (SAF-TE) and SCSI enclosure services (SES). The figure below shows the Vitesse*
VSC410 internal logic and external interfaces. Note that you need a SES I
2
C* cable which plugs
into the SAS backplane and the SAS adapter, in order to use the SES functions. This
communication can also be accomplished via the SGPIO interfaces.
Figure 16. VSC410* Block Diagram
7.3.5.1 SPI Flash
Firmware for the Vitesse* VSC410 storage management controller is stored in an 8-Megabit
(Mb) SPI Flash memory device. Each Flash device can be updated via the Intelligent Platform
Management Bus (IPMB) bus.
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