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Arch Stanton
 Post subject: Reallocated decreasing !!
PostPosted: July 4th, 2023, 12:46 
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Did anyone ever come across this:

RAW value for attribute 05 is decreasing over time after initially increasing while subjected to a surface scan using Victoria.

Drive is a ST2000DM008 which is SMR if I am not mistaken.

Attachment:
hddgsmrt1.png
hddgsmrt1.png [ 60.37 KiB | Viewed 2613 times ]


SMART one hour later

Attachment:
hddgsmrt2.png
hddgsmrt2.png [ 64.87 KiB | Viewed 2613 times ]


I am guessing / it almost seems like initially reallocated sector is 'unmapped' from spare and reassigned by the translator? Could this be what's happening?

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pclab
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 5th, 2023, 2:50 
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Seagate can degrade by itself and can also cure itself!!! Amazing drives!!! :mrgreen: :mrgreen:

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Arch Stanton
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 5th, 2023, 8:06 
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Mike, this is AMAZING!

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mr44er
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 7th, 2023, 14:51 
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Is there any document to read into this further? Since when do they do that?

I saw this on a Barracuda ES ST3750640NS 3.BAJ and thought it's an error or ghosts...
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Arch Stanton
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 7th, 2023, 15:26 
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mr44er wrote:
Is there any document to read into this further? Since when do they do that?

I saw this on a Barracuda ES ST3750640NS 3.BAJ and thought it's an error or ghosts...


No, I mean to ask. It's an observation which flabbergasted me TBH.

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mr44er
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 8th, 2023, 6:07 
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I found nothing in the manual (damn, 2006 is long time ago) : https://www.seagate.com/staticfiles/sup ... 24667b.pdf

:mrgreen: https://superuser.com/questions/1793683 ... -went-down
Nothing in the comments from the hardwareluxx.de thread (german is my native language)

What if it's just cheating, silently grabbing spares to avoid errors anywhere to avoid replacement in the end? The whole SMR-thing and not declaring it alone was a crime. In the beginning people felt the rip-off and wanted to get rid of these disks, which even were sold in external enclosures without info at all.

I never buy new disks, so I don't know if this would be normal procedure or legit:
Quote:
Seagate customer Support told me that I would need to scan my drive with their Seagate Sea Tools and if it fails it I would get a replacement. Hard Drive passed but still it has Reallocated sectors count 100 in which means that more will come.

Is there anyway to get replacement even through it passed sea tools ?

from https://www.reddit.com/r/DataHoarder/co ... count_100/
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fzabkar
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 8th, 2023, 19:45 
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This could be one of those models that writes SMART data to a cyclic buffer in ROM at 1 hourly intervals. However, I can't see what affect that would have except maybe to complicate the SMART data gathering process.

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Arch Stanton
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 9th, 2023, 5:58 
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mr44er wrote:
I found nothing in the manual (damn, 2006 is long time ago) : https://www.seagate.com/staticfiles/sup ... 24667b.pdf

:mrgreen: https://superuser.com/questions/1793683 ... -went-down
Nothing in the comments from the hardwareluxx.de thread (german is my native language)

What if it's just cheating, silently grabbing spares to avoid errors anywhere to avoid replacement in the end? The whole SMR-thing and not declaring it alone was a crime. In the beginning people felt the rip-off and wanted to get rid of these disks, which even were sold in external enclosures without info at all.

I never buy new disks, so I don't know if this would be normal procedure or legit:
Quote:
Seagate customer Support told me that I would need to scan my drive with their Seagate Sea Tools and if it fails it I would get a replacement. Hard Drive passed but still it has Reallocated sectors count 100 in which means that more will come.

Is there anyway to get replacement even through it passed sea tools ?

from https://www.reddit.com/r/DataHoarder/co ... count_100/


You r2d3 ?!

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Arch Stanton
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 9th, 2023, 5:59 
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fzabkar wrote:
This could be one of those models that writes SMART data to a cyclic buffer in ROM at 1 hourly intervals. However, I can't see what affect that would have except maybe to complicate the SMART data gathering process.


New to me, do you have any links for me Franc where I can read up on this?

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fzabkar
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 9th, 2023, 12:13 
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Extracting SMART attributes from segment 2Bh in Seagate ROM:
http://www.hddoracle.com/viewtopic.php?f=22&t=3154

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mr44er
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 10th, 2023, 4:41 
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Quote:
You r2d3 ?!


No, I don't have an account there. I found your thread via search engine.
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Arch Stanton
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 11th, 2023, 16:14 
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mr44er wrote:
Quote:
You r2d3 ?!


No, I don't have an account there. I found your thread via search engine.


Oh aha! NWM then ;)

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fzabkar
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 24th, 2023, 23:47 
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Similar behaviour for same model (ST2000DM008)?

https://forums.tomshardware.com/threads/hdd-health-suddenly-drops-to-13-then-returns-to-100-health-after-removing-some-files.3814735/

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Arch Stanton
 Post subject: Re: Reallocated decreasing !!
PostPosted: July 25th, 2023, 15:33 
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HD Sentinel should be able to tell him which attributes were involved.

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