Adaptec 2930U2 User Reference - Page 18
SCSI Peripheral Display at Bootup, Installing Multiple SCSI Cards
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SCSI Card 2930U2 User's Reference SCSI Peripheral Display at Bootup At bootup, each peripheral attached to the SCSI Card 2930U2 is identified by SCSI ID, name, and the mode (Ultra2-LVD or Ultra-SE) in which it is running. For example, a message similar to the following appears on the screen at bootup: SCSI ID:0 Seagate ST39173LC Ultra2-LVD In this example, the peripheral is assigned SCSI ID 0; "Seagate ST39173LC" refers to the name of the peripheral; "Ultra2-LVD" means that the peripheral is running in Ultra2-LVD mode. LVD (Low Voltage Differential) is the enabling technology for Ultra2. If the peripheral is running in Ultra2-LVD mode, this indicates that the peripheral's maximum transfer rate is set at the Ultra2 SCSI performance level (80 MBytes/sec). SE (Single-Ended) is the enabling technology for Fast SCSI and Ultra SCSI. If the peripheral is running in Ultra2-SE mode, this indicates that the peripheral's maximum transfer rate is set at the Ultra SCSI performance level (40 MBytes/sec). Note: If any peripheral is attached to the Ultra2 SCSI segment and is running in SE mode, one or more Wide Ultra or Ultra peripherals is attached to the Ultra2 segment and is causing the Ultra2 segment to run at speeds up to 40 MBytes/sec instead of 80 MBytes/sec. Installing Multiple SCSI Cards s You can install multiple SCSI cards in your computer; you are limited only by the available system resources (for example, IRQ settings, I/O port addresses, BIOS addresses, and so forth). s Each SCSI card you install forms a separate SCSI bus with a different set of SCSI peripherals. SCSI IDs can be reused as long as the ID is assigned to a peripheral on a different SCSI card (for example, each SCSI card can have a peripheral with SCSI ID 2). s If you have two or more SCSI cards, enable the BIOS on the boot SCSI card only. Disable the BIOS on the remaining SCSI cards. 12