Hey all, this is my first post on the forums.

 

I have a parity drive which recently showed an error.

Upon checking the attributes, it highlighted "reallocated sector count" - see attached picture.

I tried running the SMART extended self-test but it completed without any errors.

Can someone let me know what this means?

That is an indicator of drive age/wear.   Basically all drives have some "extra blocks" to compensate for bad sectors on the disk.   And in the case of your parity drive, the drive detected an error on a sector of the drive (meaning the media is no longer storing data reliably) and so it "reallocated" that sector to one of your spare blocks.

 

The drive will operate fine for now... but usually if one sector is no longer working, more will likely start to crop up as it means the media is wearing out.  And you only have so many "extra/spare" sectors for reallocation.   If you have more failed sectors than spares... DRIVE FAILURE.

 

So this is a warning, that the drive is dying.  Probably won't die today or tomorrow... but it is highly recommended to replace it as soon as you can proactively.

 

I hope that helps!

 

Do any of your other disks show SMART warnings ( 👎 ) on the Dashboard page?

 

You can click on the warning for that disk on the Dashboard page to Acknowledge it, and it will warn again if it increases.

 

Do you have Notifications setup to alert you by email or other agent as soon as a problem is detected?

Thank you both. I will acknowledge the error and proactively shop for a new drive to replace this parity drive.

My other drives do not show warnings and showing "healthy".

 

I currently do not have any notifications setup, but I will look into that now.