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SCSI Card 2940U2W User's Reference
SCSI Peripheral Display at Bootup
At bootup, each peripheral attached to the SCSI Card 2940U2W is
identified by SCSI ID, name, the SCSI segment to which it is
attached (Ultra2 or Fast/Ultra), and the mode (LVD-Ultra2 or SE-
Ultra) 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" indicates
that the peripheral is attached to the Ultra2 SCSI segment; "LVD"
means that the peripheral is running in LVD-Ultra2 mode.
LVD (Low Voltage Differential) is the enabling technology for
Ultra2. If the peripheral is running in LVD-Ultra2 mode, this indi-
cates 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 SE-Ultra mode, this indicates that the peripheral's maxi-
mum transfer rate is set at the Ultra SCSI performance level (40
MBytes/sec).
Note:
If any peripheral is attached to the Ultra2 SCSI seg-
ment and is running at SE mode, one or more Wide Ultra/
Ultra peripherals is attached to the Ultra2 SCSI segment and
is causing the Ultra2 SCSI segment to run at speeds up to
40 MBytes/sec instead of 80 MBytes/sec.
Installing Multiple SCSI Cards
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)
not used by other cards installed in your computer.
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).
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Troubleshooting
