User`s guide

KZPBA–CA PCI-to-UltraSCSI Host Adapter
1–2 EK–KZPBA–UG. B01
The host adapter supports multithreaded I/O operations, thereby allowing
simultaneous operations on multiple SCSI targets or Logical Units (LUNs). In
systems with multiple targets, the Disconnect/Reconnect feature optimizes SCSI
bus usage. In systems that have fragmented memory buffers, the Scatter/Gather
feature provides high performance.
The KZPBA–CA comes with both AXP and Intel configuration utilities. These
configuration utilities provide the capability of changing settings on the board
flash EEROM without having to make physical changes to the host adapter
board. You can change settings such as host adapter SCSI termination and SCSI
Parity Checking.
1.2 KZPBA–CA Ultra Wide Single-Ended Host Adapter
The Ultra Wide Single-ended Host Adapter contains two 68-pin high density
connectors, one internally on the surface of the board and the other on the
external bulkhead, and one 50-pin connector. The internal connectors are used to
connect any internal SCSI drives to the PCI bus. The KZPBA–CA single-ended
Host Adapter is shown in Figure 3–1.
In a 16-bit (wide) SCSI bus, the KZPBA–CA can directly support up to 15 wide
single-ended SCSI devices (operating system dependent). Each of the two 68-pin
connectors can support up to 15 single-ended 16-bit SCSI devices or seven
single-ended 8-bit SCSI devices. The 50-pin connector can support up to seven
single-ended 8-bit devices.
You can use only internal or external SCSI connectors at any one time. The
KZPBA–CA does not support simultaneous use of both internal and external
connectors.
1.3 Major Features of the KZPBA–CA
•
Compliance with PCI Local Bus Specification Revision 2.0, ANSI X3.131
SCSI-2 Standard, ANSI X3T10/1071D SCSI-3 Fast 20 Standard, and U.S. and
international safety/emissions standards
•
Ultra-Narrow SCSI (8-bit, 20 MB per second, 7 devices)
•
Ultra-Wide SCSI (16-bit, 40 MB per second, 15 devices)
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Single-ended version
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Ability to boot from any drive on the SCSI bus
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Onboard flash EEROM that can be customized using a configuration utility –
no need to remove the computer cover to change configuration
•
A wide variety of operating system specific managers and device module
software
•
Extensive support for DIGITAL StorageWorks storage products