IBM 86624RY Maintenance Manual - Page 224

Table 11. Automatically assigned SCSI IDs Bay 1 2 3 4 5 6 ID 0 1 2 3 4 5 Note: The default SCSI ID for the SCSI backplane is 15. The default SCSI ID for each channel of the RAID controller is 7. You can change the default ID addresses of the drives by changing the jumper settings on the SCSI backplane. See "SCSI backplane option jumpers" on page 274. A simplified layout of the SCSI backplane is shown in "SCSI backplane component locations" on page 273. The processing sequence for SCSI devices is set through the ServeRAID Configuration Utility program. The sequence proceeds from the lowest SCSI ID to the highest (0 to 6, then 8 to 15). Termination (internal SCSI devices): SCSI buses must be terminated at each end. The ends of the SCSI buses in the server are already terminated. All the hot-swap drives in the server have automatic termination and the RAID controller provides termination at the other end of the SCSI bus. If you install SCSI devices in the removable-media bays (bays A and B), you must disable the termination on the devices; the RAID controller is already terminated and the SCSI cable for devices in the removable-media drive bays has a terminator at the other end. For example, when you install a SCSI device in a removable-media drive bay (bay A or B), set its termination to Disable, because the SCSI cable supplied with the server is already terminated at the end. Refer to the information that come with the SCSI device for instructions about setting device jumpers or switches that control termination. Preinstallation steps (all bays): Before you install drives in the server, verify that you have all the cables and any other equipment specified in the documentation that comes with the internal drive. You might also need to perform certain preinstallation activities. Some of the steps are required only during the initial installation of an option. Note Read "Safety information" on page 340. Read the documentation that comes with the internal drive. 1. Choose the bay in which you want to install the drive. 216 Netfinity Server HMM