![]() As the smartctl man page says for both -t short and -t long, It is safe to perform non-destructive testing while the OS is running, though some performance impact is likely. Maximum time limit for the drive to perform the test. (3) of the extended self-test shall be a read/verify scan of all of the user data area, and there is no The criteria for the extended self-test are the same as the short self-test with two exceptions: segment The amount and location of the surface scanned are dependent on the completion time Particular methodology used in this test is also vendor specific.Ī read/verify scan segment wherein the drive performs read scanning of some portion of the disk Read/write circuitry test, and/or a test of the read/write head elements.Ī seek/servo segment wherein the drive tests it capability to find and servo on data tracks. The particular tests in this segmentĪre vendor specific, but as examples: this segment might include such tests as a buffer RAM test, a ![]() ![]() The details of the tests can be read in eg which summarises the elements of the short and long tests thus:Īn electrical segment wherein the drive tests its own electronics. ![]()
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