Intel BB5520UR Product Specification - Page 58

Functional Architecture Intel® Server Boards S5520HC, S5500HCV, and S5520HCT TPS 3.6 Intel® SAS Entry RAID Module AXX4SASMOD (Optional Accessory) The Intel® Server Boards S5520HC, S5500HCV and S5520HCT provide a Serial Attached SCSI (SAS) module slot (J2J1) for the installation of an optional Intel® SAS Entry RAID Module AXX4SASMOD. Once the optional Intel® SAS Entry RAID Module AXX4SASMOD is detected, the x4 PCI Express* links from the ICH10R to Slot 2 (x8 mechanically, x4 electrically) switches to the SAS module slot. The Intel® SAS Entry RAID Module AXX4SASMOD includes a SAS1064e controller that supports x4 PCI Express* link widths and is a single-function PCI Express* end-point device. The SAS controller supports the SAS protocol as described in the Serial Attached SCSI Standard, version 1.0, and also supports SAS 1.1 features. A 32-bit external memory bus off the SAS1064e controller provides an interface for Flash ROM and NVSRAM (Non-volatile Static Random Access Memory) devices. The Intel® SAS Entry RAID Module AXX4SASMOD provides four SAS connectors that support up to four hard drives with a non-expander backplane or up to eight hard drives with an expander backplane. The Intel® SAS Entry RAID Module AXX4SASMOD also provides a SGPIO (Serial General Purpose Input/Output) connector and a SCSI Enclosure Services (SES) connector for backplane drive LED control. Warning: Either the SGPIO or the SES connector supports backplane drive LED control. Do not connect both SGPIO and SES connectors at the same time. Figure 18. Intel® SAS Entry RAID Module AXX4SASMOD Component and Connector Layout 44 Revision 1.8 Intel order number E39529-013