• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 3987
  • Last Modified:

High S.M.A.R.T Seek Error Rate

While checking my S.M.A.R.T data on my hard drives in my Thecus RAID 5 Array I have noticed one of my newer Seagate drives containing a very high Seek Error Rate.

Is this a large factor in this drive failing very soon and corrupting data? And if I send this drive back to Seagate will I be guaranteed a replacement (what factors do they take into account when checking disks)?

I know its a RAID 5 Array and I can loose 1 drive without loosing data but I would like to get this problem fixed before it does completely die.

Below is the SMART data of all 5 drives (the first being the drive in error).

Other Drive Info:

Tray 1: Model = ST3320613AS Firmware = SD22
Tray 2: Model = ST3320613AS Firmware = SD22
Tray 3: Model = ST3320620AS Firmware = 3.AA
Tray 4: Model = ST3320620AS Firmware = 3.AA
Tray 5: Model = ST3320620AS Firmware = 3.AA

Tray Number        1
Model       ST3320613AS
Power On Hours       4160 Hours
Temperature Celsius       34
Reallocated Sector Count       22
Current Pending Sector       0
Raw Read Error Rate       1317807
Seek Error Rate       119505643
Hardware ECC Recovered       1317807

Tray Number        2
Model       ST3320613AS
Power On Hours       4160 Hours
Temperature Celsius       39
Reallocated Sector Count       0
Current Pending Sector       0
Raw Read Error Rate       113077352
Seek Error Rate       N/A
Hardware ECC Recovered       113077352

Tray Number        3
Model       ST3320620AS
Power On Hours       6598 Hours
Temperature Celsius       45
Reallocated Sector Count       0
Current Pending Sector       0
Raw Read Error Rate       0
Seek Error Rate       N/A
Hardware ECC Recovered       20243366

Tray Number        4
Model       ST3320620AS
Power On Hours       12645 Hours
Temperature Celsius       44
Reallocated Sector Count       0
Current Pending Sector       0
Raw Read Error Rate       0
Seek Error Rate       N/A
Hardware ECC Recovered       817450

Tray Number        5
Model       ST3320620AS
Power On Hours       12387 Hours
Temperature Celsius       43
Reallocated Sector Count       0
Current Pending Sector       0
Raw Read Error Rate       0
Seek Error Rate       N/A
Hardware ECC Recovered       20673403
0
bnoyzy
Asked:
bnoyzy
  • 2
  • 2
1 Solution
 
navdhanjalCommented:
Yes the drive is about to fail. The main indicator is not only the high seek error rate, but also the amount of relocated sectors on the drive.

A hard drive has x number of sectors, and some spare sectors too. When a drive gets a "bad" sector which cannot be read or written to, it relocates the position of this sector to one of the spare sector locations. This way a drive can have a few bad sectors and still work 100% fine. However, your drive has 22 relocated sectors...effectively saying it has 22 bad sectors it has had to deal with.

I'm not sure what Seagates stance on this would be...technically the drive is still working, and they may say you need to reach a certain threshold before it is counted as a "bad" drive. They have a good help site for dealing with issues like this:
http://www.seagate.com/ww/v/index.jsp?locale=en-US&name=SATA_Troubleshooter_-_Bad_Sectors&vgnextoid=23f44a3cdde5c010VgnVCM100000dd04090aRCRD

You will however need to remove the drive from the array to troubleshoot it, and then add it back afterwards and rebuild it.

I assume your using a Thecus NAS box...this should have started reporting a "warning" status on the drive as soon as a sector was relocated. Is it doing this?
0
 
MarkCommented:
It also has a Reallocated Sector Count of 22 which means there are bad sectors on the drive, but the data has been recovered to other sectors.
According to this Wikipedia article, it says in the section defining Seek error rates,
"Note that Seagate drives often report a raw value that is very high, even on new drives, and this does not normally indicate a failure"
http://en.wikipedia.org/wiki/Self-Monitoring,_Analysis,_and_Reporting_Technology#Known_ATA_S.M.A.R.T._attributes
0
 
bnoyzyAuthor Commented:
Yes the Thecus is giving me a warning.
I will break the array and troubleshoot the drive like you say as soon as I get my 1TB drives in to replace all my 320s, I hate building arrays of these sizes they just take so long so I hope it will hold out until next week. the other drives are looking ok though so my chances of 2 dieing are still not too high.
Thanks again for your great explaination navdhanjal and thankyou sparkmaker for backing it up.
0
 
navdhanjalCommented:
No problem mate...I have a thecus drive myself (and one of the drives is giving me a warning too!!) so if you need any advice, just let me know.
0
 
bnoyzyAuthor Commented:
Yeah they are great units I am very happy with mine and the add on modules are great.
As I said I am looking into buying 5 1TB drives to replace my 320s. I have always gone Seagate but I have heard some recent bad firmware issues with the current 7200.11 range of Seagates. My current budget does not allow for the Server edition 1TB drives also so I will not be able to go for them. Do you recommend the Western Digital 1TB SATAII HDD 32M Cache Green Power as a substitute for the Seagate 1TB 7200.11 or should I just update my firmware if I get an older 1TB Seagate with erroneous firmware version? Of course I run my Thecus 24/7.
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

  • 2
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now