Boot rom tests, Ethernet controller tests, Hard drive tests – Apple Server Diagnostics User Manual
Page 45: Memory tests

Appendix
Server Diagnostics Test Reference
45
Boot ROM Tests
Test
Estimated completion time
Description
Boot ROM Checksum
1 second
Verifies the Boot ROM
checksum.
Boot ROM FW GUID MAC Addr
Checksum
1 second
Verifies the Boot ROM FireWire
GUID MAC address checksum.
Ethernet Controller Tests
The availability of Ethernet controller tests depends on the Enternet controller installed
in the server.
Test
Estimated completion time
Description
MAC Address Verification
1 second
Verifies MAC address isn’t all FFs
or 00s.
PCI-E 1 LinkWidth Verification
1 second
Verifies PCI link width is 1.
PCI-E 2 LinkWidth Verification
1 second
Verifies PCI link width is 2.
PCI-E 4 LinkWidth Verification
1 second
Verifies PCI link width is 4.
PCI-E 2.5G Link Speed
Verification
1 second
Verifies PCI link speed is 2.5G.
Hard Drive Tests
When Server Diagnostics EFI starts, it performs a hardware existence test. All hard
drives found during this test can be tested individually using hard drive tests.
Test
Estimated completion time
Description
Full Read
2 hours for an 500 GB drive;
3 hours for a 1 TB drive
Performs a DMA full-read scan
at 1250 RPM. This checks the
entire hard drive for slow-read
failures.
Abbreviated Read
2 minutes
Performs a DMA scan at 1250
RPM. This checks the first 10 GB
of the hard drive for slow-read
failures.
Memory Tests
All memory tests are listed under Memory. These tests are described here.
An ECC error count test is automatically run after these tests complete.
Simple Memory Tests
Simple memory tests test the first 2.5 GB of memory. To test all memory, run extended
memory tests.