Apple Xserve - Apple Xserve Diagnostics (Version 3X103) - Manual (Page 36)

36 Appendix AXD Tools Test Reference
Video Controller Tests
AXD Mac OS X Tests
These tests are available if your Xserve is running AXD Mac OS X tools.
Startup Tests
These tests are automatically run when you start up AXD Mac OS X tools.
SMBIOS tests check to see if bad memory was detected and mapped out at Xserve
startup. When the Xserve tests memory at start up, it automatically maps out bad
memory. Mac OS X doesn’t see this mapped out memory, so the non-SMBIOS memory
tests don’t test it. The SMBIOS test reports these mapped out DIMMS.
When an ECC error occurs, memory catches the problem and and fixes it. When you run
other memory tests, the tests don’t realize an error has occurred. The ECC tests detect
these memory fixes and report them.
Ethernet Controller Tests
Data loop tests can add to network traffic. Consider disconnecting from the network
before running the data loop tests.
Test Estimated completion time Description
PCI-E 8 LinkWidth Verification 1 second Verifies PCI link width is 8
Framebuffer Address as Data 2 minutes Tests the framebuffer using
framebuffer addresses as data
Test Estimated completion time Description
SMBIOS Self-Test 1 second Checks the SMBIOS tables for 32-bit
errors (type 18) and 64-bit errors (type
33). Also verifies that the mapped-in
DIMM size is appropriate for the slot
it’s inserted into. If there’s a size
mismatch, an error occurs.
ECC Error Count 1 second Reports the number of ECC errors, and
then resets the count
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