Installation guide
Table Of Contents
- Preface
- Electromagnetic susceptibility
- Electromagnetic compliance
- Electromagnetic compliance for the European Union
- Australian C-Tick
- Seagate technical support services
- General description
- Initial setup information
- General information
- SCSI ID jumpers
- Drive termination
- Terminator power
- I/O circuits and data path widths
- Providing adequate cooling
- Mounting the drive and connecting cables
- Formatting the drive
- Quick reference desktop system notes
- Setting the SCSI ID jumpers
- Terminating the drive
- Terminator power
- Other applicable jumper options
- Setting the SCSI ID jumpers
- Terminating the drive
- Terminator power
- Other applicable jumper options
- Setting the SCSI ID jumpers
- Terminating the drive
- Applicable jumper options
22 Barracuda 4XL Installation Guide, Rev. B
For information about how to terminate your drive, refer to the
appropriate drive-specific section.
Figure 2. SCSI bus termination
Terminator power
You usually will not need to change this option and can normally
leave the drive configured as it was shipped from the factory. For
information about how to change the terminator power option on
your drive, refer to the appropriate drive-specific section.
I/O circuits and data path widths
• “WD” and “DC” models use differential I/O circuits. You cannot
mix these models with single-ended models (“N,” “W,” “WC”)
on the same SCSI bus. The circuits are incompatible with each
other.
• “W,” “WD,” and “WC” models have a “wide” (16-bit) SCSI data
bus rather than the standard (non-wide) 8-bit SCSI data bus;
however, you can use these wide drives on a standard (non-
Internal
SCSI device
Internal
SCSI device
Controller
External
SCSI device
External
SCSI device
External
SCSI
cable
Internal SCSI cable
Terminate
Internal
SCSI device
Internal
SCSI device
Controller
Internal SCSI cable
Terminate