HP A6829A PCI Dual Channel Ultra160 SCSI Host Bus Adapter Service and User Guide (May 2003)

Installing the A6829A Adapter
Specifying SCSI Parameters
Chapter 2 43
Bus Width
The firmware suggested default for the A6829A adapter’s bus width is
MAX (use the adapter’s maximum bus width [16 bits]). However, either of
these rates can be used for the A6829A:
• 8 bits (Narrow)
• 16 bits (Wide)
TIP HP recommends you to always use the A6829A’s maximum bus width
(16 bits), unless you have Narrow (8-bit) devices on the bus and you are
experiencing problems with the connection.
You can set the A6829A’s bus width in one or two ways, depending on the
HP-UX system the adapter is installed in (refer to Table 2-2 on page 24).
To set the bus width for A6829A HBA installed in PA-RISC based
system, see “Setting Bus Width for A6829A Host Bus Adapter Installed
in PA-RISC Based System” on page 43.
To set the bus width for A6829A HBA installed in Itanium-based
system, see “Setting Bus Width for A6829A Host Bus Adapter Installed
in Itanium‚-Based System” on page 47.