Administrative Tool
p. 50
Type Choose type of test.
Short self-test
The goal of the short test is the rapid identi-
fication of a defective hard drive. Therefore, a
maximum run time for the short test is 2 min.
The test checks the disk by dividing it into three
different segments. The following areas are
tested:
• Electrical Properties: The controller tests its
own electronics, and since this is specific to
each manufacturer, it cannot be explained
exactly what is being tested. It is conceiv-
able, for example, to test the internal RAM,
the read/write circuits or the head electron-
ics.
• Mechanical Properties: The exact sequence
of the servos and the positioning mecha-
nism to be tested is also specific to each
manufacturer.
• Read/Verify: It will read a certain area of the
disk and verify certain data, the size and
position of the region that is read is also
specific to each manufacturer.
Long self-test
The long test was designed as the final test in
production and is the same as the short test
with two dierences. There is no time restriction
and in the Read/Verify segment the entire disk
is checked and not just a section. The Long test
can, for example, be used to confirm the results
of the short tests.
Conveyance self-test
This test can be performed to determine dam-
age during transport of the hard disk within just
a few minutes.
Oine immediate self-test
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