Apple Xserve Diagnostics - Manual (Page 35)

Appendix AXD Tools Test Reference 35
AXD Mac OS X Tests
These tests are available if your Xserve is running AXD Mac OS X tools.
Ethernet Controller Tests
Data loop tests can add to network traffic. Consider disconnecting from the network
before running the data loop tests.
Hard Drive Tests
Memory (Simple) Tests
Simple memory tests test the first 2.5 GB of memory. All multicore memory tests listed
in AXD EFI tools are run.
Even though simple memory tests don’t test all memory, run these tests to detect
intermittent memory issues.
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
MAC Address Verification 1 second Verifies MAC address is not all FFs or
00s
Ethernet ROM Checksum 1 second Verifies Ethernet ROM checksum is
valid
MAC Data Loop 1 minute Verifies that there’s no data mismatch
between sent and received data while
looping within the MAC (a sublayer of
the datalink layer in the ISO network
reference model)
PHY Data Loop 1 minute Verifies that there’s no data mismatch
between sent and received data while
looping within the physical transport
medium (PHY)
Test Estimated completion time Description
Threaded Surface Scan 30 minutes for an 80 GB
drive; 4 hours for a 750 GB
drive Scans the entire surface of a hard
drive
Test Estimated completion time Description
Simple Test 12 minutes Runs all multicore memory tests listed
in AXD EFI tools