[Storage] What is wrong with the HDD?

[Mythmaker]

The HDD was acting weird; it takes quite a while to read a huge file. So I ran ATTO and get this:

Pretty much what I expected, the seq read is busted.

Then I ran HDTune to confirm..

Which I can safely say is not what I expected at all. I was expecting sudden dives, judging from my ATTO result.

Why did HDTune reported a smooth curve? So is the HDD actually alright?

 

[jtjt00]

Any warning in SMART status?

 

[Mythmaker]

Any warning in SMART status?

There is, but reallocated sector count had been there for as long as I remember lol. The HDD is 6 years old.

 

[Alternative X]

Might want to back up important stuff from your HDD in case things go south since you did mention a significant performance degradation when reading large files.

 

[Mythmaker]

Might want to back up important stuff from your HDD in case things go south since you did mention a significant performance degradation when reading large files.

Yep I did. Already pulled it out of the RAID1 setup and bought another 2x 1TB to replace it

Just wondering why CrystalDiskMark and HDTune didn't give any indication, and ATTO is the only one that truly reflects what's happening on the ground...

 

[Wongpk]

can Mythmaker use Low Level Format Tool repair it

 

[Mythmaker]

can Mythmaker use Low Level Format Tool repair it

Sounds like a great idea.

I'll try it, thanks!

 

[jtjt00]

You can try it but in most cases, futile.

 

[Kiwi8]

Reallocated Sectors Count is actually a very serious stat. Once it appears yellow it is a strong indication of near future failure. So better back up and RMA if still under warranty.

 

[jtjt00]

Mythmaker Seagate HDD already 6 years old liao.

....... So better back up and RMA if still under warranty.

 

[Mythmaker]

You can try it but in most cases, futile.

Yah I think so also. Seems to be a hardware issue rather than OS or drivers. Cos it's making weird noises in BIOS as well.

Reallocated Sectors Count is actually a very serious stat. Once it appears yellow it is a strong indication of near future failure. So better back up and RMA if still under warranty.

Reallocated Sectors Count is the number of reserved sectors still available for swapping with the bad sectors right? Or is it the number of bad sectors that had been swapped?

Hmmm actually almost all my HDD have Reallocated Sectors Count lit up within a month of purchase. That includes 2 of my Samsung F4 2tb, 2x Seagate .12 1TB and a WD Black 2TB. So all along I thought it's just another meaningless stat lol.

Warranty for the seagate just ended at 5 years

 

[Kiwi8]

Reallocated Sectors Count is the number of reserved sectors still available for swapping with the bad sectors right? Or is it the number of bad sectors that had been swapped?

Hmmm actually almost all my HDD have Reallocated Sectors Count lit up within a month of purchase. That includes 2 of my Samsung F4 2tb, 2x Seagate .12 1TB and a WD Black 2TB. So all along I thought it's just another meaningless stat lol.

Warranty for the seagate just ended at 5 years

It's the number of bad sectors that have been swapped. So it's supposed to be 0 or near 0 for a new HDD. The more swapped bad sectors, the further the HDD's head has to move to access the data.

So far my WD Black 2TB (aged around 2 to 3 years) is still having zero Reallocated Sectors Count.

 

[limcc]

There is, but reallocated sector count had been there for as long as I remember lol. The HDD is 6 years old.

Reallocated sector count is not normal, this is my age old HDD with nearly 20K of power on hours, no bad sector were found.

quote from Wiki:

a drive which has had any reallocations at all is significantly more likely to fail in the near future.[3] While primarily used as a metric of the life expectancy of the drive, this number also affects performance. As the count of reallocated sectors increases, the read/write speed tends to become worse because the drive head is forced to seek to the reserved area whenever a remap is accessed. If sequential access speed is critical, the remapped sectors can be manually marked as bad blocks in the file system in order to prevent their use.

If the number don't increase and theres only a few, this value should not bother much. but your hex value indicate 13A which is 314 in dec, that is A LOT of bad sector!

also, you can tweak HDDtune for more accurate result, click on the "gear" icon beside "exit".

 

[Mythmaker]

It's the number of bad sectors that have been swapped. So it's supposed to be 0 or near 0 for a new HDD. The more swapped bad sectors, the further the HDD's head has to move to access the data.

So far my WD Black 2TB (aged around 2 to 3 years) is still having zero Reallocated Sectors Count.

http://i.imgur.com/oVrf6Uw.png[img][/QUOTE]

[QUOTE="limcc, post: 91716792, member: 249"]Reallocated sector count is not normal, this is my age old HDD with nearly 20K of power on hours, no bad sector were found.
[img]http://i.imgur.com/6YrOwlp.png[img]

quote from [URL="http://en.wikipedia.org/wiki/S.M.A.R.T."]Wiki[URL]:


If the number don't increase and theres only a few, this value should not bother much. but your hex value indicate 13A which is [B]314[/B] in dec, that is A LOT of bad sector!

also, you can tweak HDDtune for more accurate result, click on the "gear" icon beside "exit".[/QUOTE]

Wow thanks for the knowledge guys!

How do you know it's in Dec only? It resets every month?

 

[Kiwi8]

Wow thanks for the knowledge guys!

How do you know it's in Dec only? It resets every month?

Decimal, not December.

Decimal Vs Hexadecimal.

 

[Mythmaker]

Decimal, not December.

Decimal Vs Hexadecimal.

*smack my own head*

Haha.

This is the other Seagate that was in RAID 1 with it:

Man, that means there's 1070 bad sectors :/

Looks like never buying Seagate again after these two was a good choice...

But then again, this unit is still working perfectly except for the 1070 bad sectors, which is pretty transparent to me.

 

[George Soros]

can save the data inside?