Apple Xserve - Apple Xserve - Manual (Page 46)

46 Appendix AXD Tools Test Reference
Test Estimated completion time Description
Short Random Multi-block 2 minutes Performs a threaded, random
multi-block read of random
ranges of the target hard drive.
This is not a full surface scan,
but it will cause rapid seeking
and reading of hard drive
blocks. If a block can’t be read,
an error occurs.
This test is available for hard
drives, not solid-state drives.
SSD Threaded Media Scan Not available Scan’s the entire accessible area
of a solid-state drive.
This test is available for solid-
state drives, not hard drives.
SSD New Drive SMART Data Not available Checks the SMART status of a
solid-state drive.
This test is available for solid-
state drives, not hard drives.
Memory Tests
All memory tests are categorized here.
Simple Memory Tests
AXD Mac OS X memory tests test the first 2.5 GB of memory. All multicore memory
tests listed in AXD EFI tools are run.
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 12 minutes Runs all multicore memory tests
listed in AXD EFI tools, reports
the number of ECC errors, and
then resets the count.