Intel SR1500 SR1550 Chassis TPS - Page 57

Peripheral and Hard Drive Sub-System Intel® Server System SR1550AL 6.3.2.2 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. MidPlane 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. 6.3.2.3 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. 6.3.2.4 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. 6.3.2.5 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 - AXXRAK18E) and installation of a Mini-DIMM for Intel RAID Cache support. To protect from data loss during an unexpected power loss event, an Intel® RAID Smart Battery Backup module (AXXRSBBU3) is also supported. Hardware RAID levels supported include 0, 1, 5, 10, and 50. 6.3.2.5.1 Intel® RAID Activation Key The Intel® RAID Activation Key enables the full intelligent SAS Hardware RAID solution engineered around the Intel® 80333 I/O Processor @ 500MHz. The activation key plugs directly in to a connector (J1A10) on the mid-plane board. With no RAID activation key installed, only SAS Software RAID levels 0, 1, and 10 are supported. 6.3.2.5.2 Intel RAID Cache support To further enable support for hardware RAID, the active mid-plane provides a 244-pin miniDIMM connector (J8C1), supporting a single registered ECC non-parity DDR2-400 MHz MiniDIMM to provide Intel RAID cache. Mini-DIMM capacities supported range from 128MB to 1GB. Note: See the Intel® Server Board S5000PAL Tested Memory List for a list of Intel validated mini-DIMMs. 6.3.2.5.3 Intel® RAID Smart Battery Backup Module With an Intel® RAID Smart Battery Backup module installed, data loss is prevented when data is still present in the RAID Cache Module and power is unexpectedly lost. Depending on the cache module capacity used, the battery backup unit can provide 48 to 72 hours of battery backup power to allow data stored in the RAID cache to be processed. A 2x10 connector (J9A2) is used to attach the battery backup unit to the mid-plane. 44 Revision - 1.3 Intel order number D31982-006