Adaptec 2074700-R User Guide - Page 79
Hardware Identifiers of SCSI Devices
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Installing SCO UnixWare Note: Installation of this service may take an extended period of time. If you do not plan on using the NIS or there is not an NIS server present on your network that you are installing this system onto, defer installation of NIS at this time by pressing at the NIS configuration screen. 4. After completing the OS installation, proceed to Section 7.5 to complete the installation. 7.5 Hardware Identifiers of SCSI Devices 7.5.1 Host adapter Number (HA) The host adapter number assigned to the ICP RAID controller is derived from the PCI slot number of the ICP RAID controller. Therefore, if there is only one ICP RAID controller installed in the PCI bus computer system, the host adapter number is 0. If there are two ICP RAID controllers installed, the ICP RAID controller with the lower PCI Slot number is assigned host adapter number 0 and the ICP RAID controller with the higher PCI slot number is assigned host adapter 1. Note: After a cold boot, the ICP RAID BIOS displays a couple of messages, each beginning with the controller's PCI slot number, for example, "[PCI 0/3] 4 MB RAM detected". The number before the '/' designates the order on the PCI bus, and the number after the '/' is the slot number of the controller. This will help determine the order of the ICP RAID controllers and which host adapter number is assigned to them by UnixWare. The bus number counts first and then the slot number. For example, if one controller has 0/3 and the other 1/3, then 0/3 gets HA number 0. 7.5.2 7.5.2.1 Bus Number, Target ID and LUN Target IDs and LUNs for "Non-Direct Access Devices" (devices like streamers, tapes and CD-ROMs and therefore not configurable via ICPCON), are directly assigned to the SCSI ID and the channel of the ICP RAID controller. Host drives are assigned to the SCSI ID by their Host Drive number on a virtual channel. This virtual channel is added to the physical channels. On a 2-channel controller the bus number of this channel is 2. Configuration Example (1st channel = 0, 2nd = 1, virtual =2) In the PCI computer are two ICP RAID controllers (HA 0 = 1st ICP RAID controller, HA 1 = 2nd ICP RAID controller), each with two SCSI channels. 1 hard disk as host drive no. 0 on HA0 1 hard disk as host drive no. 0 on HA1 1 hard disk as host drive no. 1 on HA1 1 Streamer SCSI ID 2, LUN 0 on SCSI channel A of HA0 1 CD-ROM SCSI ID 3, LUN 0 on SCSI channel B of HA0 1 DAT SCSI ID 2, LUN 0 on SCSI channel A of HA1 Software Installation and User's Guide 79