Intel SERVER CHASSIS SR2500 SR2500 Manual Do Utilizador

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SR2500
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Peripheral and Hard Drive Sub-System 
Intel® Server System SR2500AL 
 
 
Revision – 1.00 
Intel order number D31980-004 
48 
 
5.4.2.1 Architectural 
Overview 
 
 
 
Figure 34. Architecture Overview 
 
5.4.2.2 
x4 PCIe* Card Edge Interfaces 
Two x4 PCIe* card edges are used to connect the active mid-plane to the hot-swap backplane.  
See Table 22. Mid-plane-to-Backplane Card Edge Connector #1 Pin-out and Table 23. Mid-
plane-to-Backplane Card Edge Connector #2 Pin-out for details. The use of card edge 
connectors to the back plane eliminates all hard drive cabling. 
5.4.2.3 
IOP80333 IO processor 
The Intel 80333 IO processor is a multi-function device that integrates the Intel Xscale
®
 core 
with intelligent peripherals and two PCIe* to PCI-X* bridges. It will be connected to the server 
board ’s x4 PCIe lane and serve as bridge for PCI-X 133MHz secondary bus. The IOP80333 
also includes fully functional RAID support. 
5.4.2.4 
LSI* LSISAS1068 SAS Controller 
The LSI* LSISAS1068 controller resides on the Channel A PCI-X bus of the IOP80333 
supporting transfer rates of up to 3GB/s. It includes an Address Translation Unit (ATU) 
supporting transactions between PCI address space and 80333 address space. Address 
translation for the ATU is controlled through programmable registers accessible from both the 
PCI interface and the Intel Xscale
®
 core. The LSISAS1068 controller includes its own Flash 
ROM and NVSRAM to support SAS only software RAID.  Software RAID Levels supported 
include 0, 1, and 10.  
5.4.2.5 
Optional Hardware RAID Support 
The active mid-plane supports options to provide full hardware RAID support.  Options required 
to enable hardware RAID support include an Intel
®
 RAID Activation Key (product order code -