HP PCIe U320 SCSI Host Bus Adapter - Manual (Page 21)

3 SCSI Domain Validation utility
(Windows only)
The SCSI Domain Validation utility tests the physical connection between host adapter and devices
to ensure that the desired data transfer speeds can be achieved. Domain Validation eliminates the
guesswork of determining transfer rates and is a handy tool for configuring SCSI busses.
As SCSI performance has increased over the past several years, it has become more important to verify
that the connections between the host adapter and storage devices, such as cables, connectors and
target, are capable of handling high-speed data transfers. Previously, users had to manually decrease
transfer rates by trial and error until data was transferred successfully. Domain Validation (DV) eliminates
guesswork by verifying the connection. The ATTO SCSIDV utility performs Domain Validation on your
storage connection. The three DV tests can be selected in the SCSIDV Main Screen.
• Basic Integrity Test performs a simple integrity check to determine the fastest valid mode of
operation between the initiator and target, detecting most physical configuration problems such
as path width errors, expander errors, gross cable errors, incorrect termination, or a damaged
transceiver.
• Enhanced Integrity Test performs a more advanced integrity check. A data pattern intended to
stress the physical domain is written to and then read from memory on the device and compared
with the original data pattern. If data compare errors are detected, fallback is attempted until a
valid mode of operation is found. Problems detected by the Enhanced Integrity Test include cables
with incorrect impedance, bad SCSI device spacing, poor termination, marginal transceivers,
excessive crosstalk, and excessive system noise.
• Margining Test varies driver signal strength by +/- 20% and verifies the integrity of the subsystem
using the same methods as the Enhanced Integrity Test. Failure indicates that the subsystem is
close to failure because inferior components are significantly degrading SCSI bus signals and
thus lowering the signal margins. This can result in sudden subsystem failure or intermittent
integrity errors.
Installing the Domain Validation utility
To install the Domain Validation utility from the product CD:
1. Load the product CD into the computer. The CD will display an HTML page.
2. Click the arrow next to Utilities in the Extras section.
3. Double-click win_app_hbautil_330hp.exe to extract the files.
4. Navigate to the location where you extracted the files.
5. Double-click Setup.msi.
6. Follow the directions in the installer to finish the installation.
To install the Domain Validation utility from the HP website.
1. Download the Domain Validation utility from http://www.hp.com/support/u320e . The package
is a self-extracting archive.
2. In Windows Explorer, navigate to the location of the downloaded package. Double-click the
package to extract the files.
3. Navigate to the location where you extracted the files.
4. Double-click Setup.msi.
User guide 21