Difference between S.M.A.R.T. and chkdsk /r

I recently ran into an issue where a VM failed to start due to corruption on an iscsi pass through volume.  When the volumes were created only a "quick" format was used and it's possible there are bad sectors somewhere that caused the issue.

The volume is on a synology diskstation.  My question is, will a S.M.A.R.T.'s long /in depth scan also check for bad sectors and list them or is that something that can only be done with chkdsk /r ? S.M.A.R.T is ideal in that I can go disk by disk without downtime to the whole volume.  chkdsk needs to lock the volume which makes it unavailable and at 12TB I fully expect it to take more than a week.

Thanks in advance.

September 4th, 2013 8:48pm

I recently ran into an issue where a VM failed to start due to corruption on an iscsi pass through volume.  When the volumes were created only a "quick" format was used and it's possible there are bad sectors somewhere that caused the issue.

The volume is on a synology diskstation.  My question is, will a S.M.A.R.T.'s long /in depth scan also check for bad sectors and list them or is that something that can only be done with chkdsk /r ? S.M.A.R.T is ideal in that I can go disk by disk without downtime to the whole volume.  chkdsk needs to lock the volume which makes it unavailable and at 12TB I fully expect it to take more than a week.

Thanks in advance.

Simple. SMART is for hardware health and chkdsk is for software health. You can have healthy disk @ the physical level but damaged file system structure. These are compimentary rather then competitive things. Do overlap with a particular logical block access a bit however...
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September 4th, 2013 10:44pm

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September 7th, 2013 1:33pm

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