SMART Status vs SMART Self Test?

[jmp242]

I've got a disk with a SMART Status OK but Failed SMART Short and Extended test ... It's a seagate SATA disk. The other tests (like funnel seek test etc) are OK from Service Center 7.5 WinPE boot environment.

Is this disk bad?

[fwilson]

jmp242,

The SMART status check is basically a "Do you support SMART and is it enabled" test.  The SMART short and extended tests are drive self tests invoked by PC-Doctor. 

If any of the SMART tests are failing, I would backup the data and replace the drive. Even though data may be reliably read and written by the normal PC-Doctor tests does not mean the system is not doing retries or having issues.  Failing SMART tests is the drive itself telling you it is having problems.

-Fred