Disk WD lags

[soloowaty]

Hey!

I'm having some troubles with one of my disks - WDC WD6400AARS-00Y5B. I've noticed that it lags from time to time (every minute or so). The disk is a part of RAID 0, and it slows down entire raid, which is horrible. Here is a benchmark for this raid: http://prntscr.com/3v1l4t - it looks more or less like this each time - there is a big drop down in speed somewhere in the second part of the benchmark.

This is a SMART for this disk: http://prntscr.com/3v1wes - I've already changed the cable, and the SATA slot, I've also did a low level format. I also changed the idle time from 8 seconds to 5 minutes, according to this article http://www.ngohq.com/news/19805-critical-design-flaw-found-in-wd-caviar-green-hdds.html . I've also disabled Windows indexing on this raid, but it didn't helped.

Any ideas what might be wrong and how to fixed it? I really need this disk working

Thanks in advance!

!>

 

[TyrOd]

Hey!

I'm having some troubles with one of my disks - WDC WD6400AARS-00Y5B. I've noticed that it lags from time to time (every minute or so). The disk is a part of RAID 0, and it slows down entire raid, which is horrible. Here is a benchmark for this raid: http://prntscr.com/3v1l4t - it looks more or less like this each time - there is a big drop down in speed somewhere in the second part of the benchmark.

This is a SMART for this disk: http://prntscr.com/3v1wes - I've already changed the cable, and the SATA slot, I've also did a low level format. I also changed the idle time from 8 seconds to 5 minutes, according to this article http://www.ngohq.com/news/19805-critical-design-flaw-found-in-wd-caviar-green-hdds.html . I've also disabled Windows indexing on this raid, but it didn't helped.

Any ideas what might be wrong and how to fixed it? I really need this disk working

Thanks in advance!

!>

I'm not sure what you're asking. Your driver is failing and you need to replace it.

 

[soloowaty]

What driver do you mean? RAID driver?

I've did whole bunch of new tests for those disks, here are results:

Disk 500gb (WDC WD5000AADS-00S9B
SMART: http://prntscr.com/3vgcmu
Victoria: http://prntscr.com/3vga3t
Benchmarks:
http://prntscr.com/3vgdvm
http://prntscr.com/3vge3b
http://prntscr.com/3vgeaj
http://prntscr.com/3vgein

Disk 640gb (WDC WD6400AARS-00Y5B
SMART: http://prntscr.com/3vgcz1
Victoria: http://prntscr.com/3vgd9y
Benchmarks:
http://prntscr.com/3vgdix
http://prntscr.com/3vgeoz
http://prntscr.com/3vgeuh

So it seams that both disks are more or less ok, although the 500gb one has some slight speed lags, but much smaller and less frequent than on the benchmarks of entire RAID, that I pasted in my previous post.

At the end I've made a RAID again and formatted it, and tested it once more, and the results are still very bad:

RAID: http://prntscr.com/3vgfhc

So - is it a disk problem, or RAID driver problem, or Windows problem, or what?

!>

 

[TyrOd]

Sorry I meant "drive" not "driver".
Reallocated sectors, read errors, etc...
All of that indicates weak/failing heads.
It's not unusual for these drives to become unstable after 3-4 years, especially in a RAID environment which they don't handle well in general.