SMART failure in RAID-5

[Morindin]

Hello,

I have a QNAP TS-453A and I have an issue which is making me dubious.

I have 4 x 4TB HDD from WD Red that composes my RAID-5.

A few weeks ago I got a SMART warning on my drive #2, the warning was SMART 197 Current_Pending_Sector set to 1.

After reading online, I understood and decided to replace the drive to a new one, same brand and size.

At the exact moment I replaced drive #2 for a new one, the warning SMART 197 Current_Pending_Sector set to 1 appeared on my drive #1. ( no I did not change the wrong drive, I checked )

That seems to be too much of a coincidence for this to append, hence why I'm doubting if I understood the error properly and maybe replaced the drive for nothing.

Can anyone help me shed light on the subject?

Kind regards,

Patrick

[dosborne]

What firmware version are you running? There are a number of posts where it seems that SMART reporting is erroneous in some of the 5.0.0 builds.

[Morindin]

Firmeware is 5.0.0.1891.

It would make much more sense then the "coincidence" I thought I was experiencing.

If that is the case, then I will have a spare drive for future failure it seems.

Thanks alot for the response! I'll keep a eye for a fix then instead of buying a new drive again!!

[dolbyman]

does the swapped drive report SMART issurs when read externally?

[dosborne]

You may also want to consider rolling back to the more stable 4.5.4 firmware stream as it may be a while before 5.0.0 is truly production ready.