HP ProLiant CL380 Compaq ProLiant CL380 User Guide - Page 234

SCSI ID Configurations H-11 Disk Side SCSI Bus The Disk Side Bus consists of the CR3500 Controller connections to the disk bus, as well as the actual SCSI disk drives in the shared storage area. Since the Disk Side Bus is separate from the Host Side Bus, there is no chance for SCSI ID conflicts with any devices configured on the Host Side Bus. Figure H-7 shows the SCSI bus numbering for the Disk Bus Side in a standard ProLiant CL380 configuration with no external expansion shared storage. Server Node 1 SCSI Adapter Server Node 2 SCSI Adapter Host Side Host Port 0 Host Port 1 Bus (Channel 0) (Channel 1) CR3500 Disk Drive Bus Side (Channel 2) Bus 6 Host Host Port 0 Host Port 1 Side (Channel 0) (Channel 1) Bus CR3500 Drive Bus Disk (Channel 2) Side 7 Bus Disk Disk Disk Disk Disk Disk 9 10 11 12 13 14 Internal Shared Disks Repeater to 4214 External Storage Figure H-7. Disk Side SCSI Bus Numbering CR3500 Controller Connections Each CR3500 Controller has a connection to the Disk Side SCSI Bus. These are automatically set to Initiator SCSI IDs 6 and 7, and cannot be changed. Since these are on a separate SCSI bus, there is no conflict with the SCSI IDs 6 and 7 that are used for the Compaq 64-Bit Dual Channel Wide Ultra2 SCSI Controllers in each server node. In fact, these IDs were chosen to be the same to reduce confusion.