HP StorageWorks U320e SCSI Host Bus Adapter user guide (AH627-96001, March 2007)

3 SCSI D omain 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 o ver 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 m emory 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 d etected by the Enhanced Integrity Test include cables
with incorrect impedance, ba d SCSI device spacing, poor termination, marginal transceivers,
excessive crosstalk, and excessi ve system noise.
• Margining Test varies driver signal strength by +/- 20 % and verifies the integrity of the s ubsystem
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 m a rgins. This can result in sudden subsystem failure or intermittent
integrity errors.
Installing the Domain Validation utilit y
To install the Domain Validation utility from the product CD:
1. Load t
he product CD into the computer. The CD will display an HTML page.
2. Click th e 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. Dou
ble-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. Dow
nload the Domain Validation utility from h
ttp://www.hp.com/s upport/u 320e. The package
is a
self-extracting archive.
2. In
Windows Explorer, navigate to the location of the downloaded package. Double-click the
pa
ckage to extract the files.
3
.
N
avigate to the location where you extracted the files.
4. Double-click Setup.msi.
User guide
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