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Interpreting test results, Understanding unix test results – Apple Xsan 1.x User Manual

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Chapter 2

Using the Xsan Tuner Application

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The following screen captures show how the creation of the test file for a read test can
influence the results of a separate test already in progress.

Interpreting Test Results

Xsan Tuner is designed to estimate SAN performance in terms of the number of
streams a client should be able to read or write (for video) or the raw data transfer rate
(for UNIX reads and writes). In many cases, a client doing actual work might get better
results than indicated by the test. The value reported by Xsan Tuner can be considered
a reliable minimum value.

Understanding UNIX Test Results

The UNIX test results can be understood directly as the rate at which data is moving
over the SAN in response to client read and write requests.

. . . can have significant effect
on another test in progress.

Creating test files
for a read test . . .