Apple Server Diagnostics - Manual (Page 53)

Appendix Server Diagnostics Test Reference 53
Even though these tests don’t test all memory, run these tests to detect intermittent
memory issues.
After the first 2.5 GB of memory is tested, the memory test then tests for ECC errors.
When an ECC error occurs, memory catches the problem and fixes it. The test detects
the number of memory fixes and reports them.
Note: The time required to complete memory tests correlates to the size of memory
being tested. These estimates are based on testing 1 GB of memory.
Test Estimated completion time Description
Simple Test 17 minutes Runs all multicore memory
tests listed in Server Diagnostics
EFI, reports the number of
ECC errors, and then resets the
count.
Power Supply Tests
Test Estimated completion time Description
Good 1 second Checks if the power supply’s
good bit is set. If it’s not set, this
could indicate that the power
supply isn’t seated well or is bad,
or that there’s no AC connected.
Quick 5 seconds This is available only if you have
more than one power supply.
This turns off the redundant
power supplies so that only one
is run on.
Sensor Tests
When Server Diagnostics Mac OS X starts, it performs a hardware existence test. All
sensors found during this test can be tested individually using sensor tests.
Test Estimated completion time Description
Sensor Reads 1 second Verifies that the sensor reads are
within the preset sensor limits.
USB Tests
Connect USB devices before running USB tests.
Test Estimated completion time Description
Presence 1 second Verifies that a USB device is
connected.